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| An element is any substance that cannot be broken down into simpler substances. |
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| A carbohydrateis made up of carbon, hydrogen, and oxygen. Carbohydrates give energy to the body. |
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| Lipids contain carbon, hydrogen, and oxygen. Lipids store energy for the body |
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| Proteins contain carbon, hydrogen, oxygen, nitrogen, and sulfur. Proteins make up most of the cell and speeed up chemical reactions. |
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| Nucleic acids contain carbon, oxygen, hydrogen, nitrogen, and phosphorus. Nucleic acids carry out the functions of life. |
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| RNA is a Ribonucleic acid that plays an important role in the production of proteins |
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| DNA is the genetic material that carries information about an organisum and is passed from parent to offspring. |
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| Enzymes is a type of protein that speeds up a chemical reaction in a living thing |
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| Diffusion is the main method by which small molecules move across the cell membrane. |
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| Selectively permeable means that some substances can pass through the cell membrane while others can not. |
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| Omosis is the diffusion of water molecules through a selectively permeable membrane. Because cells can not function properly without adequate water, many cellular processes depend on omosis. |
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| Passive transport is the movement of disolved materials through a cell membrane without using cellular energy |
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| Active transport is the movement of materials througha cell membrane using cellular energy |
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| Amino acids are protein molecules made up of smaller molecules. |
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| A compound is when two or more elements combine chemically, they form a compound. |
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