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7th Grade Sci-Ch 2

Vocabulary words

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