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Unit 6 Lesson 18
Heat and Cellular Respiration
| Term | Definition |
|---|---|
| ATP | a molecule that carries energy inside cells; it is the energy currency of a cell |
| cellular respiration | the process of combining food molecules and oxygen and using the chemical energy to power all the activities that sustain life |
| ectotherm | an organism that depends on external sources to regulate its body temperature |
| electron transport chain | third step in cellular respiration which takes the energy in the electrons transported by NADH and FADH2 to create ATP |
| endotherm | an organism that can regulate its own body temperature and generate its own internal heat |
| glycolysis | first step in cellular respiration; starts breaking the sugar molecule down in the cell cytoplasm producing pyruvic acid and 2 ATPs |
| Krebs cycle | second step during cellular respiration; produces carbon dioxide and adds electrons to NAD+ and FAD+ to create NADH and FADH2 which carry the high energy electrons to the electron transport chain |
| metabolic reactions | chemical reactions that allow organisms to survive (including cellular respiration) and to shuttle energy to other parts of the body that require more energy |
| thermogenesis | the production of heat by living organisms as a by-product of metabolic activity |
Created by:
atrang
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