| A | B |
|---|
| cell wall | provides structure, shape and protection |
| cell membrane | controls the movement of substances into and out of the cell |
| cytoplasm | a gell-like liquid in which the other organelles float |
| nucleus | the control center of the cell |
| nuclear membrane | provides protection for the chromosomes |
| chormosomes | made of DNA, are the instructions for the cell's activities |
| nucleolus | makes ribosomes |
| mitochondria | carry out cellular respiration to provide energy for the cell's activities |
| endoplasmic reticulum | tubular passageways for substances |
| vacuoles | membrane sacs for storage of substances |
| lysosomes | membrane sacs that breakdown substances |
| Golgi bodies | collect substances and ship them off in small vacuoles |
| ribosomes | produce proteins for the cell |
| chloroplasts | carry out photosynthesis for plant cells making food for the plant |
| difussion | movement of substances from an area of high concentration to an area of lower concentration |
| osmosis | the movement of water through a selectively permeable membrane from an area of high concentration to an area of lower concentration |
| selectively permeable | lets some substances through but not others |
| active transport | moving a substance through the cell membrane using energy at special protein sites in the cell membrane |
