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Question | Answer |
---|---|
element | any substance that cannot be broken down into simpler sybstances |
atom | smallet unit of an element |
compound | 2 or more elements combine chemically |
molecule | smallest unit of compounds |
organic compounds | most compunsd that contain carbon |
WHat are the 4 most important groups of organic compunds ofund in living things? | lipids, protiens, carbohydrates, nucleic acids |
carbohydrate | energyrish organic compound made of the elemts carbon hydrogen and oxygen. ex. sugar and starches |
proteins | large organic molecules made of carbon, hydrogen,oxygen, nitrogen, and in some cases sulfur |
amino acids | protein molecules made up on smaller molecules |
enzyme | type of protein tht speeds up a chemical reaction in aliving thing |
lipids | fats, oils , waxes,-energy richorganic compunds- made of carbon hydrogenand oxygen. ex cholestral |
nucleic acids | very large organic molecules made of carbons oxygen hydrogen nitrogen and phosphorus |
DNA | genetic material tht carries info about and organism tht is passes from parent to offspring |
RNA | plays an important role in the porduction of proteins |
true or false? without water, most chemical reactions witihin cellls cant take place | true |