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7th Grade Sci-Ch 2
Vocabulary words
| Question | Answer |
|---|---|
| cell | membrane covered structure that contains all the materials necessary for life. |
| stimulus | change that affects the activity of the organism |
| homeostasis | maintenance of a stable internal environment |
| sexual reproduction | two parents produce offspring that will share characteristics of both parents |
| asexual reproduction | single parent produces offspring that are identical to the parent |
| heredity | passing of traits from one generation to the next |
| metabolism | total of all of the chemical activities that the organism performs |
| producer | can make their own food |
| consumer | must eat (consume) other organisms to get food |
| decomposer | get food by breaking down the nutrients in dead organisms or animal wastes |
| protein | made up of amino acids and are needed to build and repair body structures and to regulate processes in the body |
| carbohydrate | energy-giving nutrients that include sugars, starches and fiber; made up of carbon, hydrogen and oxygen |
| lipid | compounds that can't mix with water; store energy and form cell membranes; fats and steroids |
| phospholipid | lipid that contains phosphorus; are molecules that form much of the cell membrane; head attracted to water - tail is not |
| ATP | adenosine triphosphate; major energy-carrying cell in the cell |
| nucleic acid | large molecules made up of subunits called nucleotides; |
Created by:
msparks
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