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Definitions to know

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Question
Answer
Absolute zero   The lowest possible temperature (-273.15C) measured in Kelvin at 0, never actually obtained  
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Absorption   The process by which a substance is soaked up  
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Acid   A substance that can give a proton to another substance. Acids are compounds, cont H, that can attack and dissolve many substances. Desc as weak or strong, dilute or concentrated, mineral or organic.  
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Acidic solution   A solution with a pH lower than 7  
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Acidity   General term for the strength of an acid in a solution (H+)  
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Acid Radical   The negative ion left behind when an acid loses a Hydrogen ion. E.g. Cl- in HCL  
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Acid Salt   Contains at least one H ion and can behave as an acid in chem reax, produced under conditions that do not allow complete neutralisation of the acid.  
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Aerobe   microorganism that grows in the presence of oxygen  
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Amino Acid   Any of 20 basic bldg blocks of proteins - composed of a free amino (NH2) end, a free carboxyl (COOH) end, and a side group (R).  
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Anaerobe   Organism that grows in the absence of oxygen  
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Antibiotic resistance   ability of microorganism to produce a protein that disables antibiotic or prevents transport of antibiotic to cell  
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Antibiotic   class of natural and synthetic compounds that inhibit the growth of or kill other microbes  
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Antibody   An immunoglobin protein produced by B-lymphocytes of the immune system that binds to specific antigen molecule.  
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Anticodon   Nucleotide base triplet in a transfer RNA mol that pairs with a complementary base triplet, or codon, in a messenger RNA molecule.  
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Antigen   Any foreign substance, such as a virus, bacterium, or protein that elicits an immune response by stimulating the production of antibodies.  
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Antigen determinant   Surface feature of a microorganism or macromolecule, such as a glycoprotein, that elicits an immune response  
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Antimicrobial agent   Any chemical or biological agent that harms the growth of microorganisms  
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Asexual reproduction   Nonsexual means of reproduction which can include grafting and budding  
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Autosome   A chromosome that is not involved in sex de-termination  
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Bacillus   A rod-shaped bacterium  
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Backcross   Crossing an org with one of its parent org's  
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Bacteriocide   Class of antibiotics that kills bacterial cells  
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Bacteriophage   A virus that infects bacteria. Altered forms are used as vectors for cloning DNA.  
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Bacteriostat   Class of antibiotics that prevents growth of bacterial cells.  
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Bacterium   Single-celled, microscopic prokaryotic organism: a single cell organism w/o a distinct nucleus.  
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Base Pair (bp)   Pair of complementary nitrogenous bases in a DNA molecule--A-T G-C. Also, the unit of measurement for DNA sequences.  
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Biologics   Agents (such as vaccines) that give immunity to diseases or harmful biotic stresses.  
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Carcinogen   substance that induces cancer  
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Carcinoma   Malignant tumor derived from epithelial tissue, which forms the skin and outer cell layers of internal organs.  
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Catalyst   Substance that promotes a chemical reax by lowering the activation energy of a chem reax, but which itself remains unaltered by the reaction.  
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Catalytic Antibody (ABENZYME)   Antibody selected for its ability to catalyze a chemical reax by binding to and stabilizing the trasition state intermediate.  
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Catalytic RNA (Ribozyme)   natural or synthetic RNA mol that cuts an RNA substrate  
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Cation   Positively charged ion  
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Centers of Origin   Usu the location in the world where the oldest cultivation of a particular crop has been identified  
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Centromere   Central portion of the chromosome to which the spindle fibers attach during mitotic and meiotic division  
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Chemotherapy   Treatment for cancers that involves administering chemicals toxic to malignant cells.  
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Chloramphenicol   Antibiotic that interferes with protein synthesis.  
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Chromatid   Each of the 2 daughter strands of a duplicated chromosome joined at the centromere during mitosis and meiosis.  
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Codon   Group of three nucleotides that specifies addition of one of the 20 amino acids during translation of an mRNA into a polypeptide.  
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Coenzyme (cofactor)   Organic molecule, such as a vitamin, that binds to an enzyme and is required for catalytic activity.  
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Colony   Group of identical cells (clones) derived from a single progenitor cell.  
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Conjugation   The joining of two bacteria cells when genetic material is transferred from one bacterium to another.  
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Cross-Hybridization   hydrogen bonding of a single-stranded DNA seq that is partially but not entirely complementary to a single-stranded substrate.  
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Crossing-over   The exchange of DNA sequences between chromatids of homologous chromosomes during meiosis  
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Cross-pollination   Fertilization of a plant from a plant with a differnt genetic makeup  
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Culture   Particular kind of org. growing in a laboratory medium  
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Dalton   Unit of measurement equal to the mass of a hydrogen atom (Avagadro's number) 1.67x10E-24 gram/L  
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Death Phase   Final growth phase, during which nutrients have been depleted and cell number decreases.  
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Denature   TO induce structural alterations that disrupt the biological activity of a mol. Often refers to breaking hydrogen bonds btw base pairs in ds nucleic acid mols  
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Density gradient certrifugation   High-speed centrifugation in which mols "float" at a point where their density equals that in a grasient of cesium chloride or sucrose.  
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Dideoxynucleotide (didN)   deoxynucleotide lacking a 3' hydroxyl group - used in DNA sequencing and treatment of viral diseases.  
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Digest   to cut DNA molecules with one or more restriction endonucleases  
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Diploid cell   Cell containing 2 copies of each chromosome  
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DNA (deoxyribonucleic acid)   An organic acid and polymer composed of 4 nitrogenous bases; linked via intervening units of phosphate and the pentose sugar deoxyribose. Genetic material of most organisms.  
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DNA sequencing   Procedures for determining the nucleotide sequence of a DNA fragment.  
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Dominant gene   gene whose phenotype is present in a single copy  
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Dominant (acting) oncogene   Gene that stimulates cell proliferation and contributes to oncogenesis when present in a single copy.  
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Dominant   Allele is said to be dominant if it is expressed in phenotype in the presence of a recessive allele  
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Double-helix   Desc the coiling of the antiparallel strands of the DNA molecule.  
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DS Complimentary DNA (dscDNA)   duplex DNA mol copied from a cDNA template.  
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Ecology   study of the interactions of org with their environment and with each other.  
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Ecosystem   Organisms in a plant pop and the biotic and abiotic factors which impact them.  
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Electrophoresis   Technique of separating charged molecules in a matrix to which is applied in an electrical field.  
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Electroporation   Method for transforming DNA in which high voltage pulses of electricity are used to open pores in cell membranes, through which foreign DNA can pass.  
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Endophyte   An organism that lives inside another  
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Enzymes   Proteins that control the various steps of all chemical reactions  
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Eukaryote   Org. possessing a nucleus and other membrane-bound vessicles - protist, fungi, plant and animal kingdoms  
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Evolution   long-term process through which a population of org accumulates genetic changes that enable its members to successfully adapt to env cond and to be exploit food resources.  
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Flanking region   The DNA sequences extendingon either side of a specific locus or gene.  
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Fungus   microogranism that lacks chlorophyll  
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Gene insertion   The addition of one or more copies of a normal gene into a defective chromosome.  
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Gene   A locus on a chromosome that encodes for a specific protein or several related proteins. It is considered the functional unit of heredity.  
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Genetic engineering   The manipulation of an organism's genetic endowment by introducing or eliminating specific genes through modern molecular biology technologies.  
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Genetic marker   A gene or group of genes used to "mark" or track the action of microbes.  
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Genotype   structure of DNA that determines the expression of a trait.  
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Genus   A category incl closely related species. Interbreeding between organisms within the same catagory can occur.  
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Growth factor   A serum protein that stimulates cell division when it binds to its cell-surface receptor.  
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Haploid cell   A cell containing only one set, or half the usual (diploid) number of chromosomes.  
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Hemophilia   An X-linked recessive genetic disease, caused by a mutation in the gene for clotting factor VIII (hemophilia A) or clotting factor IX (hemophilia B), which leads to abnormal blood clotting.  
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Homologous chromosomes   Chromosomes that have the same linear arrangement of genes--a pair of matching chromossomes in a diploid organism.  
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Homologous recombination   Exchange of DNA fragments between two DNA molecules or chromatids of paired chromosomes (during cross over)at the site of identical nucleotide sequences.  
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Host   An organism that contains another organism.  
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Hydrogen Bond   A relatively weak bond formed between a Hydrogen atom (covalently bound to a N or O2 atom) and a N and O2 with an unshared e- pair.  
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Hydrolysis   A reaction in which a molecule of water is added at the site of cleavage of a molecule to two products.  
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In situ   Refers to performing assays or manipulations with intact tissues.  
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In vivo   Refers to biological processes that take place within a living org or cell.  
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Incomplete dominance   A condition where a heterozygous off-spring has a phenotype that is distinctly different from, and intermediate to, the parental phenotypes.  
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Insulin   A peptide hormone secreted by the islets of Langerhans of the pancreas that regulates the level of sugar in the blood.  
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Interferon   A family of small proteins that stimulate viral resistance in cells.  
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Lysis   The destruction of the cell membrane  
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Malignant   Having the properties of cancerous growth.  
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Meiosis   The reduction division process by which haploid gametes and spores are formed, consisting of a single duplication of the genetic material followed by two mitotic divisions.  
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Messenger RNA (mRNA)   class of RNA mol's that copies the genetic info from DNA, in the nucleus, and carries it to the ribosomes, in the cytoplasm, where it is translated into a protein.  
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Metabolism   The biochemical processes that sustain a living cell or organism.  
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Mitosis   The replication of a cell to form two daughter cells with identical sets of chromosomes.  
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Molecular biology   The study of the biochemical and molecular interactions within living cells.  
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Mutagen   Any agent or process that can cause mutations.  
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Mutation   An alteration in DNA structure or sequence of a gene.  
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Natural selection   Differential survival and reproduction of organisms with genetic characteristics that enable them to better utilize environmental resources.  
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Nucleic acids   deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) are made up of long chains of molecules called nucleotides.  
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Nucleotide   A building block of DNA and RNA, consisting of a nitrogenous base, a five-carbon sugar, and a phosphate group. Together, the nucleotides form codons, which when strung together form genes, which in turn link to form chromosomes.  
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OSHA   One of the US agencies responsible for regulation of biotechnology. The major law under which the agency has regulatory powers is the Occupational Health and Safety Act.  
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Organelle   A cell structure that carries out a specialized function in the life of a cell.  
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Ovum   female gamete  
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Parasitism   The closest association of two or more dissimilar organisms where the association is harmful to at least one.  
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Pathogen   Organism which can cause disease in another organism.  
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Persistence   Ability of an org. to remain in a particular setting for a period of time after it is introduced.  
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Phenotype   Observable characteristics of an organism, the expression of a gene alleles (genotype) as an observable physical or biochemical trait.  
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Phospholipid   A class of lipid mols in which a phosphate group is linked to a glycerol and two fatty acyl groups. A chief component of biological membranes.  
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Plaque   a clear spot on a lawn of bacteria or cultured cells where cells have lysed by viral infection.  
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Polymer   A molecule composed of repeated subunits.  
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Polypeptide (protein)   Polymer composed of multiple amino acid units linked by peptide bonds.  
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Polysaccharide   A polymer composed of multiple units of monosaccharides (simple sugar).  
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Primary cell   A cell or cell line taken directly from a living organism, which is not immortalized.  
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Prokaryote   Bacterial cell lacking a true nucleus; its DNA is usually in one long strand.  
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Protease   An enzyme that cleaves peptide bonds that link amino acids in protein molecules. An enzyme that adds phosphate groups to a protein mol at serine, threonine, or tyrosine residues.  
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Protein   A polymer of amino acids linked via peptide bonds and which may be composed of two or more polypeptide chains.  
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Recessive gene   Characterized as having a phenotype expressed only when both copies of the gene are mutated or missing.  
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Recombinant DNA   process of cutting and recombining DNA fragments from different sources as means to isolate genes or to alter their structure and funtion.  
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Recombinant   A cell that results from recombination of genes  
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Retrovirus   member of a class of RNA viruses that uses the enzyme reverse transcriptase to reverse copy its genome into a DNA intermediate, which integrates into the hostcell chromosome. Many nat occurring cancers of vertebrate animals are caused by retroviruses.  
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Reverse genetics   Using linkage analysis and polymorphic markers to isolate a disease gene in the absense of a known metabolic defect, then using the DNA seq of the cloned gene to predict the aa sequence of its encoded protein.  
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Ribosomal RNA (rRNA)   The RNA component of the ribosome  
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RNA (ribonucleic acid)   Organic acid c/o repeating nucleotide units of a, g, c, and uracil, whose ribose components are linked by phosphodiester bonds  
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Sexual reproduction   process where two cells (gametes) fuse to form one hybrid, fertilized cell.  
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Subunit vaccine   Vaccine c/o a purified antigenic determinant that is separated from the virulent organism.  
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Synapsis   Pairing of homologous chromosome pairs during prophase of the first meiotic division, when crossing over occurs.  
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Taq polymerase   A heat-stable DNA polymerase isolated from the bacterium. Therrnus aquaticus, used in PCR.  
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Telomere   end of a chromosome  
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Transcription   The process of creating a complementary RNA copy of DNA.  
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Vaccine   Preparation of dead or weakend pathogen, or of derived antigenic determinants, that is used to induce info of antibodies or immunity against the pathogen.  
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Vector   an autonomously replicating DNA mol into which foreign DNA fragments are inserted and then propagated in a host cell. Also living carriers of genetic material from plants to plant, i.e. insects.  
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Virulence   The degree of ability of an organism to cause disease.  
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Virus   Infectious particle composed of a protein capsule and a nucleic acid core, which is dependent on a host org for replication A ds DNA copy of an RNA virus genome that is integrated into the host chrom during lysogenic infection.  
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Wild type   An organism as found in nature; the org before it is genetically engineered.  
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X-linked disease   a genetic disease caused by a mutation on the X chromosome. In such recessive conditions- a normal female "carrier" passes on mutated X chrom to an affected son.  
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Abrasion   injury to the integrity of the skin resulting in skin loss  
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Abrupt   describes a sudden change that occurs without warning  
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Abscess   pus forming pocket  
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Abstain   the deliberate effort to refrain from an action  
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Acapnia   low level of Carbon Dioxide (CO2) in the blood  
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Accept   to willingly receive something; the process of granting approval  
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Access   the freedom to use something as one chooses; the permission or ability to enter or approach a specific area  
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Accountable   responsible for actions or explanations  
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Acne   Inflammation of the skin related to glands and hair  
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Adenoiditis   Inflammation of the adenoids  
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Adhere   the process of binding one thing to another using glue, tape, or another agent; refers to the action of maintaining loyalty or support  
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Adverse   in a contrary fashion; can cause harm; may also refer to something that is in opposition to one's interests  
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Alopecia   baldness  
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Amenorrhea   Lacking menstrual discharge  
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Annual   duration of a single year; an occurrence that takes place once each year  
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Anorchism   Absence of testes  
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Anoxia   oxygen (O2) deficiency  
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Anterior   frontal position  
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Anteroposterior   frontal to back positioning  
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Anuria   No urine production  
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Aphonia   no voice  
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Apnea   not breathing  
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Apply   to put something to use; having a relevant or valid connection to something else  
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Atelectasis   Abnormal expansion of the lung  
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Audible   capable of being heard  
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Azoturia   Elevated or excessive level of nitrogen substrates and urea in urine  
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Endogenous   the growth from a deep tissue; refers to cond's that arise from factors that are internal to an organism  
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Endoscopy   inspection of a body cavity - visually  
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Enuresis   Uncontrollable urination  
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Epidermal   related to the skin  
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Epididymitis   Inflammation of the epididymis  
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Epididymis   one of a pair of long, tightly coiled ducts that carry sperm from the seminiferous tubules of the testes to the vas deferens  
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Epithelial   Related to epethelium tissue  
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Epithelioma   skin cell tumor  
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Erythema   redness in appearance  
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Erythrocyte   red blood cell  
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Erythrocytosis   elevated rbc count  
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Erythroderma   redness of the skin  
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Eupnea   normal breathing  
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Exacerbate   to cause something to become more intense in nature; esp an increase in violence or severity  
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Excess   surpassing usual limitations; unnecessary indulgence  
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Exogenous   the growth from superficial or shallow tissue; refers to conditions caused by factors external to an organism  
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Exposure   being subject to a condition or influence; making a secret fact known publicly  
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External   being outside the human body; existing outside the confines of a specific space or institution  
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Fibroma   tumor made of fibrous cells  
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Fibrosarcoma   Malignant tumor made of fibrous cells  
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Fissure   crack in skin's integrity; cleft or groove on the surface of an organ; lineal fault on a bony surface that occurs during development of a part  
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Flaccid   the state of not being firm; lacking vigor, force or youthful firmness  
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Flush   to chase from a place of concealment; forcing one substance out of a space by introducing another  
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Gaping   something wide open or exposed  
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Hepatosalpinx   fallopian tube with blood present  
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Hidradenitis   inflammation of sweat glands  
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HIV   retrovirus causing AIDS  
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Hydration   taking up of elements with the aid of water; constant supply of fluids  
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Hydrosalpinz   water in the fallopian tube  
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Hygiene   the science of health-inducing practices  
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Hymenectomy   removal of the hypmen  
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Hyperplasia   elevated number of cells  
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Hypocapnia   decreased level of CO2 in the blood stream  
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Hypodermic   related to under the skin  
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Hypoplasia   decreased numbers of cells required for normal organ development  
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Hypoxemia   limited O2 in the bloodstream  
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Hysteropexy   fixation of the uterus  
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Iatrology   study of medicine  
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Indicence   arrival of something at a surface; something that occurs or affects something else  
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Induration   firm point or points, possibly in the periwound area  
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Inferior   below a point of origin  
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Inflamed   to incite an intensely emotional state; also refers to something that has be set on fire  
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Ingest   to take into the mouth for digestion  
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Insidious   something or someone who is enticing but dangerous; slow-developing dangerousness  
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Intact   remaining whole or untouched  
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Internal   inside the body or the mind  
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Invasive   tending to spread or infringe upon something  
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Karyocite   cellular unit with a nucleus  
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Keloid   scar tissue that has exhibited excess growth  
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Keratogenic   creation of horny like tissue appearance  
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Labile   unstable; constantly undergoing chemical or physical change or breakdown  
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Laceration   wound with irregular borders; jagged  
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Latent   not presently active but with the potential to become active  
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Lateral   opposite of medial; rel to the point of origin  
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Leiodermia   smooth skin  
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Leiomyoma   tumor made of smooth muscle cells  
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Leiomyosarcoma   malignant tumor made of smooth muscle cells  
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Lethargic   sluggish, indifferent, or apathetic  
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Leukocyte   white blood cell  
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Leukocytosis   elevated wbc's  
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Lipoid   fat-like substance  
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Lipoma   tumor composed of fat  
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Liposarcoma   malignant tumor made of fat cells  
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Lithotripsy   crushing of a stone  
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Lumbar   lower back region  
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Mammoplasty   repair of the breasts  
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Mammotome   devise used to cut breast tissue  
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Manifestation   act of becoming outwardly visible  
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Mastitis   inflammation of the breast tissue  
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Mastectomy   removal of breast  
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Mastoptosis   drooping of breast  
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Menarche   start of menstruation  
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Menometrorrhagia   flow of blood during menstruation, and between cycles  
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Melanocarcinoma   malignant black tumor  
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Melanoma   tumor of epithelial tissue  
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Metastasis   progression of a disease between organs  
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Metrorrhea   uterus discharge that is excessive  
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Micturate   voiding or urination  
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Myometritis   inflammation of the uterine tissue  
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Myopathy   muscular disease  
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Necrosis   cellular death; often resulting in black, dead tissue  
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Neopathy   new-sprung disease  
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Nephrectomy   removal of a kidney  
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Nephrogram   x-ray of the kidney  
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Nephrolysis   kidney separation  
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Nephropexy   fixation of the kidney  
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Nephroma   kidney tumor  
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Nephromegaly   kidney enlargement  
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Nephroptosis   sagging kidney  
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Nephrostomy   creating an opening of the kidney  
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Neuroma   tumor involving nerves  
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Nocturia   urination at night  
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Nutrient   something that provides nourishment  
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Bilateral   present on two sides  
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cast   hard protective device applied to protect a broken bone while the bone heals  
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Compensatory   offsetting or making up for something  
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Complication   an undesired problem due to the result of another event  
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Concave   rounded invard  
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Consistency   Degree of viscosity; how thick or thin a fluid is  
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Constrict   to draw together to shrink  
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Contingent   dependent  
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Contour   Shape or outline of a shape  
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Contraindication   Reason why something is not advisable or should not be done  
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Defecate   expel feces  
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Deficit   a deficiency or lack  
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Depress   press downward  
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Diameter   distance across the center of an object  
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Dilate   enlarge or expand  
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Distended   enlarge or expanded from pressure  
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Inflamed   reddened, swollen, warm, and often tender  
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Manifestation   An indication or sign of a condition  
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Nutrient   a substance or ingredient that provides nourishment  
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Oral   Given through or affecting the mouth  
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Overt   Obvious, easily observed  
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Parameter   A characteristic or constant factor  
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Paroxysmal   Beginning suddenly or abruptly  
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Patent   Open  
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Potent   Producing a strong effect  
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Precaution   preventative measure  
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Precipitous   Rapidly uncontrolled  
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Predispose   to make more susceptible or more likely to occur  
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Preexisting   Already present  
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prognosis   anticipated or expected course or outcome  
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rationale   underlying reason  
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Untoward   adverse or negative  
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Void   excrete urine  
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Volume   amt of space occupied by a fluid  
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Abdominopelvic   cavity composed of the abdomen and the pelvis  
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Absorption   Mvmt of nutrients from the digestive tract to the bloodstream  
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Actin   Protein making up the I band of the sacromere  
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Amino acid   building block of proteins  
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Antibody   special proteins that protect the body from foreign substances  
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ATP   Adenosine Triphosphate, energy  
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Atria   Upper chambers of the heart  
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Bile   Produced in the liver to emulsify fat in the stomach  
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Cartilage   tissue made of cells and fibers that connect and support  
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ceruminous gland   gland of the ear that produces ear wax  
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Chromosomes   Bodies within the nucleus made of DNA and proteins called histomes  
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Cilia   Small hairlike projections on some cells  
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CNS   central nervous system: brain and spinal cord  
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Coronal Plane   Imaginary line passing through the body fro the head to feet that divides the body anteriorly and posteriorly  
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Cranial cavity   body cavity containing the brain  
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Diaphragm   Dome-shaped breathing muscle that separates the thoracic and abdominal cavities  
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Diffusion   mvmt of materials from high concentration to lower concentration  
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Dorsal Horn   Cresent-shaped projection of gray matter within the spinal cord where sensory neurons enter the spinal cord  
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ECG   electrocardiogram, a record of the electrical activity of the heart  
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Embryo   Prenatal development time between zygote and fetus  
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Endometrium   inner lining of the uterus  
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Enzymes   functional proteins; usu end in "ase"  
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Foramen Magnum   A passage in the skull bone through which the spinal cord enters the spinal column  
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Glucose   a simple sugar found in certain foods, produced by plants  
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Homeostasis   The physiologic steady state that is naturally maintained within the body  
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Hypothalamus   Portion of the brain that regulates body temp, sleep, and appetite  
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Joints   articulations between adjoining bones  
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Keratin   a tough, fibrous, insoluble protein forming the primary component of hair, skin, nails,and tooth enamel  
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Keratinized Epithelium   dead cells of the epidermis  
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Lacteal vessel   found within villi of intestinal wall, where fat nutrients are absorbed  
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Adjective   a descriptive word that modifies a noun or pronoun  
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Adverb   a word that modifies a verb, adj, or another adverb and indicates when, how, where, why, or how much  
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Article   a word that is used to limit a noun, either indefinite (a or an) or definite (the)  
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Clause   a group of words that are related and contain both a subject and verb  
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Direct object   the noun or pronoun that recieves the action of the verb and answers the question whom or what  
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Noun   a word for a person, place or thing  
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Object of the preposition   the noun, pronoun, phrase, or clause to which the prep refers  
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Phrase   a group of words that are related but do not contain a verb and a subject together  
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Possessive pronoun   a pronoun used to indicate ownership  
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Preposition   a word such as by, at, to, or from that gives additional info, usu in relationship to something else in the sentence  
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Pronoun   a word that replaces and refers to a noun  
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subject   a noun or pronoun that performs the action of a verb. If a sentence contains a verb or being or a linking verb such as be, feel, become, or look--the subject of the sentence is the noun or pronoun being described  
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Verb   a word that shows an action or a state of being  
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antecedent   the noun that a pronoun refers to e.g. Mom went to the store before I could remind her to buy milk. Mom is the antecedent  
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Coordinating conjunctions   words that join two or more words, phrases, or clauses so that each conjoined element is equal E.g. for, and, nor, but, or, yet, so (FANBOYS)  
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Subordinating conjunction   a word that joins two or more clauses and makes the clause that contains it dependent on another clause; making the clause that cont the sub conj of less importance E.g. because, though, although, as, as if, when, and while  
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Nominalization   the making of a noun from a verb, adverb, or adj  
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Active verbs   verbs that show an action performed by the subject  
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Predicate   the part of the sentence that tells what the subject does or what is done to the subject. It includes the verb and all the words that modify the verb.  
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Predicate Adjective   an adj that follows a linking verb and helps to explain the subject. E.g. My professors are wonderful.  
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Predicate Nominative   Noun or pronoun that follows a linking verb and helps to explain the subject E.g. Professors are teachers.  
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Ligaments   tissue connecting bone to bone  
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Median Plane   imaginary line dividing the body or body part into right and left portions  
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Mediastinum   Space within the thoracic cavity that houses all the organs of the chest except the lungs  
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metabolism   the sum total uses of ATP in the body  
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Myosin   A protein that makes up nearly half of the proteins in muscle cells  
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orbits   Cavities containing the eyes  
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Organelle   A structurally discrete component of a cell that performs a specific fx  
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pH   Measurement associated with acids and bases pH=-log(Ah) based on the activity (Ah) of hydrogen ions dissolved in a solution  
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Phagocytosis   Engulfing of materials by wbc's in the body  
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Plasma   the liquid portion of the blood  
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Pulmonary Circulation   Blood flow through a network of vessels between the heart and the lungs for the oxygenation of blood and the removal of carbon dioxide  
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Ribosome   Organelle of the cell where protein synthesis takes place  
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Sagittal   An imaginary line running from front to back that divides the body into right and left portions  
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Sarcoplasmic Reticulum   Organelle of the muscle fiber that stores Calcium  
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Sebaceous glands   Oil glands of the skin  
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Spinal Column   backbone that houses and protects the spinal cord  
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subcutaneous tissue   Layer of tissue under the dermis that contains adipose tissue  
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Sudoriferous Glands   sweat glands  
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synovial membranes   Loose, connective tissue that llines the joint cavity  
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systemic circulation   The general blood circulation of the body, not including the lungs  
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Thoracic Cavity   chest cavity  
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Transverse Plane   Imaginary line dividing the body or body parts into top and bottom portions  
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vasoconstriction   a narrowing of the diameter of a blood vessel  
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Vasodilation   widening of the diameter of a blood vessel  
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ventral horns   The anterior columns of the gray matter of the spinal cord  
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ventricles   lower chambers of the heart  
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zygote   fertilized egg, from the time it is fertilized to implantation  
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Average speed   the distance an object travels divided by the time the object travels  
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Velocity   speed in a specific direction  
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Acceleration   the change in velocity over a period of time  
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Rate of Gravity   9.8 m/sec2  
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Newton's First law of Motion   a body at rest will remain at rest, and a body in motion will remain in motion, unless acted on by an unbalance force F=ka  
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Newton's Second Law of Motion   the constant of proportionality (k) is equal to the mass of the object F=ma  
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Newton's Third Law of Motion   For every action there must be an equal and oppisite reaction.  
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Friction   opposes motion and is expressed in Newtons  
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Crest   High point of a wave  
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Trough   Low point of a wave  
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amplitude   Maximum displacement from equilibrium  
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Wavelength   Distance between successive identical parts of a wave  
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Frequency   Vibrations or oscillations per unit of time. Expressed in vibrations per second and measured in hertz (s-1)  
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concave   positive focal lengths form a variety of image shapes, sizes and orientation depending on the focal length of the mirror where the obj is place.  
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convex mirror   negative focal lengths smaller and upright  
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Scientific Argument   1. Problem identification 2. Question asked 3. Hypothesis developed 4. Data collection & experimentation 5. analysis 6. conclusion  
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Diapedesis   the process of wbc's squeezing through the cappilary slits in response to cytokines, occurs, followwed by cellular adhesion molecules (CAM's) guiding the wbc's to the site of injury or infection  
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