| A | B |
| cell membrane | outer coating of the cell |
| nucleus | the "brain" of the cell |
| endoplasmic reticulum | two types, rough and smooth, involved in making proteins |
| ribosome | makes protein, dots found on the ER |
| cytoplasm | the liquid portion of the cell |
| mitochondria | makes energy for the cell |
| prokaryote | a single-celled organism that does not have a nucleus Example - bacteria |
| eukaryote | an organism made up of cells that have a nucleus |
| selectively permeable | when a cell membrane allows some things in or out but does not allow other things to pass in or out (like a colander) |
| cell wall | a rigid structure that surrounds the cell membrane and provides support to the cell |
| choroplast | an organelle found in plant and algae cells where photosynthesis occurs |