| A | B |
|---|
| element | any substance that cannot be broken djown into simpler substances |
| atom | smallest unit of an element |
| compound | two or more elements that are chemically combined |
| molecule | smallest unit of most compounds |
| organic compound | compound that contains carbon |
| inorganic compound | compounds that do not contain carbon |
| protein | large organic molecules made of carbon, hydrogren, oxygen, nitrogen, and in some cases sulfur. (meat, eggs, fish, nuts, beans) |
| amino acid | smaller molecules that make up protein molecules |
| enzyme | a type of protein that speeds up a chemical reaction |
| carbohydrate | energy rich organic compound made up of the elements of carbon, hydrogen and oxygen. (sugars and starch) |
| lipid | energy rich organic compounds made of carbon, hydrogen and oxygen (fats, oils and waxes) |
| nucleic acid | very large organic molecules made of carbon, hydrogen, nitrogen, phosphorus - contain the instructions that cells need to carry out all functions of life |
| DNA | deoxyribonucleic acid - genetic material that carries information about an organism that is passed from parent to offspring (found in chromatin in nucleus) |
| RNA | ribonucleic acid - found in the cytoplasm as well as the nucleus- plays an important role in the production of proteins |
