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Vocab Ch. 1
Honors Biology Ch. 1 Vocab
Question | Answer |
---|---|
Archaea | One of two prokaryotic domains of life, the other being Bacteria. |
Bacteria | One of the two prokaryotic domains, the other being Archaea |
Bio- | scientific prefix for life |
Biology | the scientific study of life |
Biosphere | the entire portion of earth inhabited by life; the sum of all the planet's ecosystem |
Cell | smallest unit of life that can live on its own and makes up all living organisms |
Climate Change | A directional change in temperature, precipitation, or other aspect of the global climate that lasts for three decades or more. |
Community | All the organisms that inhabit a particular area; an assemblage of populations of different species living close enough together for potential interaction |
Controlled Experiment | An experiment designed to compare an experimental group with a control group; ideally, the two groups differ only in the factor being tested. |
DNA (deoxyribonucleic acid) | A nucleic acid molecule, usually a double-stranded helix |
Data | recorded observations |
dependant variable | a factor whose value is measured in an experiment to see whether it is influenced by changes in another factor (independent variable) |
Ecosystem | All the organisms in a given area as well as the abiotic factors with which they interact; one or more communities and the physical environment around them |
emergent properties | New properties that arise with each step upward in the hierarchy of life, owing to the arrangement and interactions of parts as complexity increases. |
eu- | the scientific prefix meaning good, well, pleasant, or true |
Eukarya | The domain that includes all eukaryotic organisms. |
eukaryotic cell | A type of cell with a membrane-enclosed nucleus and membrane-enclosed organelles. Examples of organisms with these cells are protists, plants, fungi, and animals. |
evolution | descent with modification; the idea that living species are descendants of ancestral species that were different from the present-day ones; also defined more narrowly as the change in the genetic composition of a population from generation to generation |
experiment | A scientific test. Often carried out under controlled conditions that involve manipulating one factor in a system in order to see the effects of changing that factor. |
genes | A discrete unit of hereditary information consisting of a specific nucleotide sequence in DNA (or RNA, in some viruses). |
gene expression | The process by which information encoded in DNA directs the synthesis of proteins or, in some cases, RNAs that are not translated into proteins and instead function as RNAs. |
genome | The genetic material of an organism or virus; the complete complement of an organism's or virus's genes along with its noncoding nucleic acid sequences. |
genomics | the study of whole sets of genes and their interactions within a species, as well as genome comparisons between species |
hypothesis | a testable explanation for a set of observations based on the available data and guided by inductive reasoning. a hypothesis is narrower in scope than a theory. |
independent variable | a factor whose value is manipulated or changed during an experiment to reveal possible effects on another factor (the dependant variable) |
inquiry | The search for information and explanation, often focusing on specific questions. |
karyo- | means nut or kernel and also refers to the nucleus of a cell. |
molecule | two or more atoms held together by covalent bonds |
natural selection | A process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates than other individuals because of those traits. |
organ | A specialized center of body function composed of several different types of tissues. |
organelles | any several kinds of membrane-enclosed structures with specialized functions, suspended in the cytosol of eukaryotic cells |
organism | an individual living thing, consisting of one or more cells |
population | a group of individuals of the same species that live in the same area and interbreed, producing fertile offspring |
pro- | before, in front of, preceding, on behalf of, in place of, and the same as |
prokaryotic cell | a type of cell lacking a membrane-enclosed organelles. organisms with prokaryotic cells (bacteria and archaea) are prokaryotes |
proteome | the entire set of proteins expressed by a given cell, tissue, or organism |
proteomics | the systematic study of the full protein sets (proteomes) encoded by genomes |
science | an approach to understanding the natural world |
technology | The application of scientific knowledge for a specific purpose, often involving industry or commerce but also including uses in basic research. |
theory | an explanation that is broader in scope than a hypothesis, generates new hypotheses, and is supported by a large body of evidence |
tissue | An integrated group of cells with a common function, structure, or both. |
variables | a factor that varies during an experiment |