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cells chapter 1
28 words for cells 1
| Term | Definition |
|---|---|
| metabolism | sum total of all chemical activities in an organism. |
| stimulus | signal to which an organism reacts; change in the environment |
| life span | maximum length of time an organism can be expeted to live |
| excretion | process of getting rid of waste materials |
| spontaneous | hypothesis that states that life can spring from nonliving |
| ingestion | taking in food;eating |
| digestoin | process by which food is broken down into simpler substances |
| respiration | process in which simple food substances such as glucose are broken down and the energy they contain is released |
| response | some action or movement of an organism brought on by a stimulus |
| homeostasis | ability of an organism to keep conditions inside it's body the same, even though conditions inside it's body the same, even though conditions in it's external environment change. |
| element | pure substances that cannot be separated into simpler substances by ordinary chemical processes |
| compound | two or more elements chemically combined |
| organic compound | compound found in living things that contains the element carbon |
| carbohydrate | energy rich substance found in foods such as vegetables,cereal grains,and bread;sugars and starches |
| fat | substance that supplies the body with energy and also helps support and cushion the vital organs in the body |
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