characteristics of lfe, scientific method, dichotomus key
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Nutrition | materials from the environment that change into forms that can be used.
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| Autotrophic | Organisms that can make their own food. Example: trees
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| Heterotrophic | Organisms that must ingest materials and break down nutrients.
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| Transport | Useable material taken into an organism and distributed throughout (circulation)
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| Respiration | Organisms obtain energy in nutrients (ATP)
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| Aerobic | Requires oxygen
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| Anerobic | No oxygen needed, much less energy
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| Synthesis | Combine simple substances and use to replace or repair parts.
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| Growth | Increase in size or cell number
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| Excretion | Rid cell of metabolic waste as a result of chemical activity (sweat)
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| Regulation | Control and coordinate cell activity
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| Reproduction | Make more, procreate, increase number of species
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| Sexual reproduction | Two parents, Union of special sex cells, increases species variation
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| Metabolism | All chemical reactions that occur within a cell
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| Homeostasis | Maintenence of a stable internal environment. (body temperature, water concentration)
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