| A | B |
|---|
| Element | a substance that cannot be broken down into simpler substances |
| Atom | the smallest particle of an element that is still that element |
| Compound | a substance made of two or more elements combined chemically |
| Molecule | the smallest particle of a compound that is still that compound |
| Organic Compound | a compound that contains the element Carbon |
| Inorganic Compounds | compounds that do not contain Carbon plus a few that do like Carbon dioxide |
| Carbohydrates | energy-rich compounds made up of Carbon, Hydrogen, and Oxygen |
| Cellulose | a carbohydrate found in plant cell walls |
| Sugars | simple carbohydrates produced photosynthesis |
| Starches | complex carbohydrates produced by combining simple sugar molecules |
| Proteins | large organic compounds made of Carbon, Hydrogen, Oxygen, Nitrogen, and in some cases Sulfur |
| Amino Acids | smaller molecules that combine to make protein molecules |
| Enzyme | a type of protein that speed up a chemical reaction, an organic catalyst |
| Lipids | energy-rich organic compounds that include fats, oils, and waxes |
| Cholesterol | an important lipid found in animal cell membranes. Excess amounts can clog blood vessels. |
| Nuclei Acids | very large organic molecules made of Carbon, Oxygen, Hydrogen, and Phosphorus. They carry information. |
| DNA | genetic material that contains information that directs cell activity. It is passed from parent to offspring. |
| RNA | nucleic acid found in the cytoplasm and ribosomes. It plays an important role in protein synthesis. |
