| A | B |
|---|
| amino acid | organic molecule that is the building block of protein |
| carbohydrate | organic compound composed of carbon, hydrogen, and oxygen; used by living things as an energy source |
| cell membrane | bilipid layer that encloses the cytoplasm, essential to the cell's cytoplasm; also called the plasma membrane |
| cell theory | principle that states all organisms are made of one or more cells that are derived from other cells |
| cellulose | carbohydrate that is the main structural component of cell walls |
| central vacuole | membrane-bound cavity in plant cells used for storage |
| centriole | rod-shaped organelle that help move chromosomes during cell division |
| chromosome | cellular structure in which genes are located |
| cilia | in cells, tightly packed rows of short flagella used for movement |
| collagen | fiborus structural protein present in all multicellular organisms, particularyly in connective tissue |
| compound | substance that is made up of more than one kind of atom |
| cytoplasm | the material between the cell membrane and the nuclear membrane |
| cytoskeleton | cytoplasmic network of protein filaments that plays an essential role in cell movement, shape, and division |
| DNA | nucleic acid that stores hereditary info. |
| endoplasmic reticulum | cell membrane in the cytoplasm that transport substances made by the cell |
| enzyme | protein that catalyzes a chemical reaction |
| eukaryotic | complex cell that has nucleus enclosed by a membrane |
