| A | B |
|---|
| nucleus | dense oval or sphere; control center of cell |
| cell wall | rigid layer on outside of plant cells |
| cell membrane / plasma membrane | thin, flexible skin surrounding cell |
| cytoplasm | gel-like fluid that supports cell structures |
| mitochondrion | oval with folded membranes inside; powerhouse of cell, releases energy |
| chloroplast | green; makes food for cell by transforming light energy into food |
| vacuole | "water bubble", stores food and water; large in plant cells |
| ribosomes | tiny grains; produce proteins |
| endoplasmic reticulum | a network of passageways that help to transport materials |
| lysosomes | small round structures that contain enzymes that break down food and old cells |
| Golgi bodies | package proteins for delivery |
| nuclear membrane/envelope | membrane that surrounds the nucleus |
| plastid | small, round structures that contain pigments (colored compounds) |
| eukaryotes | cells that possess membrane-bound organelles |
| prokaryotes | cells that do NOT contain membrane-bound organelles |
| cellular respiration | process that releases energy from food |
| photosynthesis | process that converts light energy into food |
