| A | B |
|---|
| element | any substance that cannot be broken down into simpler substances |
| atom | the smallest part of an element |
| compound | when 2 or more atoms chemically combine |
| molecule | the smallest part of a compound |
| carbon | most of the compounds in living things contain this element |
| organic compounds | compounds that contain carbon |
| inorganic compounds | compounds that do not contain carbon |
| proteins | large organic molecules that your cells use to build body structures such as muscles |
| amino acids | 20 smaller molecules that combine to form proteins |
| enzyme | a type of protein that speeds up chemical reactions in living things |
| carbohydrates | an energy rich organic compound made of carbon, hydrogen and oxygen |
| sugars | produced in the food making process of plants |
| lipids | fats, oils, and waxes |
| nucleic acids | large organic molecules that contain the instructions that cells need to carry out their functions |
| DNA | the nucleic acid that carries the information that is passed from parent to offspring |
| RNA | the nucleic acid that carries the information to make proteins |
| water | the substance that makes up two thirds of your body |
