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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 |