| A | B |
| prokaryote | Example: bacteria that have no nucleus or membrane bound organelles |
| plasma membrane or cell membrane | a bilipid layer that control what comes into the cell |
| nucleolus | darkened area in nucleus where chromatin is concentrated |
| cell wall | made of cellulose and found only in plant cells |
| endoplasmic reticulum (ER) | highly folded membrane surrounded the nucleus that may or may not have ribosomes |
| ribosomes | use mRNA to synthesize proteins |
| Golgi body (or complex) | packages proteins from vesicles sent by the ribosomes |
| lysosome | contains digestive enzymes and usually not found in plant cells |
| vacuole | large sac-like container for water found in plant cells |
| chloroplast | where photosynthesis takes place--found only in plant or algae cells |
| mitachondria | glucose and oxygen is burned here to produce ATP and carbon dioxide |
| plastids | plant organelles that store pigments and starch |
| cytoplasm | liquid part of the cell interior |
| cytoskeleton | scaffolding of fibers found inside the cell in which organelles may be attached |
| chromatin | visible DNA in the nucleus |
| homeostasis | process by which the cell controls its life functions in response to changes in its environment |