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