| A | B |
| cell | basic unit of living things |
| plant cell | type of cell that plants are made of |
| animal cell | type of cell that animals are made of |
| cell membrane | thin structure that holds a cell together and regulates what enters and exits a cell |
| cell wall | rigid structure to supports and protect a plant cell |
| cytoplasm | fluid inside a cell |
| nucleus | control center of a cell |
| mitochondria | power plant of a cell |
| chloroplast | makes food for a plant cell |
| vacuole | stores water, nutrients and waste |
| organelles | tiny structures that carry out specific functions for cells |
| tissue | groups of similar cells that carry out a specific function |
| organ | collection of tissues joined in a structural unit to serve a common function |
| organ system | groups of organs that work together to carry out a complex function |
| organism | living thing |