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| Happened 500 billion years ago, when thousands of new species were found whose fossils have been found in the Burgess Shale strata |
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| The sum of a species’ use of the biotic and abiotic resources in its environment. |
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| How is an animal different from fungi? |
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| Animals do not have cell walls and they ingest their nutrients rather than creating it (heterotroph vs autotroph) |
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| How are animals different from bacteria? |
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Definition
| Animals are multicellular |
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| How are animals different from plants? |
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| Animals have no cell wall |
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| What are the useful features in classifying animals? |
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| Symmetry, Coelem, Germ/Tissue Layers, Proto/Dueterostome |
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| One of the most common forms of life. Some example are ticks and mites, tapeworms, and intestinal roundworms |
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| How does diversity arise? |
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| Random movement due to thermal energy, meaning that molecules will move away from each other over time. Efficient way to transport molecules over short, intracellular distances, inadaquate for transporting over longer distances |
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| Indicates how long it takes molecules to spread apart |
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| A type of weak chemical bond that is formed when the slightly positive hydrogen atom of a polar covalent bond in one molecule is attracted to the slightly negative atom of a polar covalent bond in another molecule or in another region of the same molecule. |
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| the ratio of inertial force to viscous force |
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| The total amount of energy an animal uses in a unit of time |
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| The total amount of energy an animal uses in a unit of time |
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| The exchange of a substance or heat between two fluids flowing in opposite directions. For example, blood in afish gill flows in the opposite direction of water passing over the gill, maximizing diffusion of oxygen into and carbon dioxide out of the blood. |
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| Referring to organisms that are warmed by heat generated by their own metabolism. This heat usually maintains a relatively stable body temperature higher than that of the external environment. |
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| Regular fats are used as insulation and brown fat genreates heat while the mitochondria make it brown |
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| The steady-state physiological condition of the body. |
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| The maintenance of internal body temperature within a tolerable range. |
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| A decrease in the diameter of blood vessels caused by contraction of smooth muscles in the vessel walls. |
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Definition
| A decrease in the diameter of blood vessels caused by contraction of smooth muscles in the vessel walls. |
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