| A | B |
|---|
| organic molecules | compounds made of carbon carbon bonds |
| macromolecules | large molecules usually made of repeating monomer units |
| chemical reaction | formation or breaking of chemical bonds |
| carbohydrates | macromolecules made of sugars (monosaccharides) |
| starch and glycogen | complex carbohydrates used for storing energy |
| cellulose | complex carbohydrate used by plants for cell walls |
| lipid | organic molecules that are used for energy storage and cell membranes |
| fat | solid lipid that is saturated |
| protein | macromolecules made of amino acids |
| enzyme | protein that controls chemical reactions |
| nucleic acid | macromolecule that is made of nucleotides |
| amino acid | subunit which makes up proteins |
| DNA | nucleic acid which holds the codes for amino acid sequences for proteins |
| atom | basic unit of matter |
| element | substance that only has one type of atom, example C, H, O, N, P, S |
| electron | negatively charged particle found in atoms |
| ion | atom that has lost or gained electrons, charged atom |
| chemical bond | force which holds atoms or ions together |
| covalent bond | bond in which atoms share electrons |
| molecule | a group of atoms held together by chemical bonds |
