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| form when two or more elements combine |
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| any substance that can't be broken down into simpler substances |
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| carbohydrates, lipids, proteins, and nucleic acids |
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| some important groups of organic compounds that living things need are: |
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| energy rich organic compounds made of the elements carbon, hydrogen, and oxygen |
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| compounds that contain mostly carbon and hydrogen and SOME oxygen |
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| large organic molecules made of carbon, hydrogen,oxygen, nitrogen, and, in some cases, sulphur |
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| a group of proteins that speed up chemical reactions that are necessary for life would take too long |
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| very long organic molecules |
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| is the genetic material that carries info about an organism and is passed form parent to offspring |
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| the shape of a DNA molecule is described as a what? |
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