| A | B |
|---|
| cell | basic unit of structure and function of all forms of life |
| cell membrane | thin flexible barrier around a cell; regulates what enters and leaves the cell. |
| nucleus | in cells, the structure that contains the cell's genetic material and controls the cell's activities. |
| cytoplasm | jellylike material that fills the cell |
| ribosomes | small particle in the cell on which proteins are assembled; made of RNA and protein. |
| Endoplasmic Reticulum (ER) | internal membrane system in cells in which lipid components of the cell membrane are assembled and some proteins are modified; commonly called the conveyor belt of the cell. |
| Golgi Apparatus | stacks of membranes in the cell that modifies, sorts, and packages proteins from the endoplasmic reticulum. |
| Mitochondria | converts the chemical energy stored in food into a form usable for the cell (ATP). |
| Lysosomes | cell organelle that is filled with enzymes; digests waste products for the cell. |
| cytoskeleton | network of protein filaments within some cells that helps the cell maintain its shape and is involved in may forms of cell movement. |
| centrioles | structures located in the cytoplasm of animal cells near the nuclear envelope; involved in cell division. |
| vacuole | cell organelle that stores materials such as water, salts, proteins, and carbohydrates. |
