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Classification
organisms | are things that have all of the characteristics of life |
unicellular | organisms that are made up of only one cell |
multicellular | organisms that are made up of more than one cell |
growth | when an organism gets bigger |
development | the combination of all of the changes organisms undergo as they grow (such as specialization of cells) |
reproduction | the process by which one organism makes one or more new organisms |
adaptation | a characteristic an organism has that makes it better able to survive in its environment |
stimulus | anything an organism responds to |
response | the reaction of an organism to a stimuli |
homeostasis | an organism's ability to maintain steady internal conditions when outside conditions change |
sun | all energy on Earth comes from the _____ |
classify | to group ideas, information, or objects based on similarities |
Aristotle | He developed the first system of classification |
Plants and Animals | the two groups that Aristotle classified all living things as |
Carrolus Linnaeus | Scientist who created a system of classification based on six characteristics; was the first to call his groups Kingdoms |
Six Characteristics Linnaeus used | similarities in body struture, systems, size, shape, color, and methods of obtaining food |
binomial nomenclature | two-word naming system developed by Carolus Linnaeus |
1st word of binomial nomenclature | Genus (always capitalize the first letter)Latin and itallicized |
2nd word of binomial nomenclature | species (do not capitalize)Latin and itallicized |
systematics | today's classification system is based on |
5 kingdoms proposed by Robert H. Whittaker | animal, plant, fungi, protist, monera |
4 characteristics that place an organism into a kingdom | 1. Do the organisms cells have a nucleus? 2. Are more than one cells present? 3. Does it make its own food? 4. Does it move? |
prokaryotic | simple cells that do not have a nuclei or membrane-bound organelles |
eukaryotic | cells with a nucleus and organelles |
photosynthesis | process by which an organism (mostly plants) make their own food |
levels of organization under each domain | Kingdom, Phylum (Division), Class, Order, Family, Genus, Species |
dichotomous key | a key arranged in steps with descriptive statements at each step |
where dichotomous keys are located | field guides and scientific manuals |
Whittatker's kingdom Monera later divided into which two kingdoms? | Archaebacteria and Eubacteria (bacteria) |
systematics | uses all of the evidence that is known about organisms to classify them |
Bases of systematics (there are 6) | cell type, habitat, the way they obtain food and energy, structure and function of features, common ancestry, molecular analysis (like DNA) |
List the three domains | Baterica, Archaea, Eukarya |
Bacteria | 27. ____________________ ( also called eubacteria) a simple single celled organisms. Examples: Yersinia pestis, E. coli, and Streptococcus pneumoniae. |
Archae | _____________________are simple unicellular (made of only one cell) organisms that often live in extreme environments. |
Protist | are unicellular and more complex than bacteria or archaea. Examples: paramecium, amoeba, and diatom |
Fungi | are unicellular or multicellular (composed of more than one cell) and absorb food. Examples: mushrooms, yeast, and club mold. |
Plants | are multicellular and make their own food through a process known as photosynthesis. |
Animals | are multicellular and take in their food. |
taxonomy | the process or system of describing the way in which different living things are related by putting them in groups |
cladogram | phylogentic tree; branched diagram that shows the relationships among organisms, including common ancestors |
6 characteristic of life; how you know something is an organism | organized, grow and develop, respond, reproduce, maintain certain internal conditions, use energy |