| A | B |
| nucleus | it controls the cell |
| chloroplast | the plant cell's food factory |
| cell wall | outer structure of a plant cell |
| cells | the building blocks of humans |
| cytoplasm | jelly-like substance in cells |
| cell membrane | outer structure of animal cell |
| microscope | tool for studying cells |
| animal cell | round or circular shaped cell |
| plant cell | box shaped cell |
| vacuole | stores food, water, and waste |
| tissues | groups of cells form these |
| organs | groups of tissues form these |
| organ systems | groups of organs form these |
| chlorophyll | green substance in chloroplast |