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BSA Unit 1, Test 1b
cell components
| Part | Composition/Location | Primary Function |
|---|---|---|
| microvilli | short extensions of cell membrane | absorb materials into cell |
| nucleus | DNA and proteins | contains chromosomes |
| nucleolus | RNA, DNA and protein/small body in nucleus | makes ribosomes |
| cytoplasm | colloidial suspension filling cell | contains cytosol and organelles |
| cytosol | fluid portion of cytoplasm | surrounds organelles |
| rough ER | network of membranes surrounding nucleus | sorts proteins and forms them into more complex compounds |
| smooth ER | network of membranes surrounding nucleus | involved with lipid synthesis |
| ribosomes | RNA and protein | manufacture protein |
| mitochondria | large organelles with folded membranes inside | convert energy from nutrients into ATP |
| Golgi apparatus | layers of membranes | makes compounds containing proteins, sorts and prepares them for transport |
| lysosomes | small sacs of digestive enzymes | digest substances within cell |
| peroxisomes | membrane-enclosed organelles containing enzymes | digest substances within cell |
| vesicles | small membrane-bound sacs | store materials and move bulk materials into and out of cell |
| centrioles | two rod-shaped bodies near nucleus | help separate chromosomes during cell division |
| cilia | short, hair-like projections on cell membrane | move fluids around cell |
| flagellum | long, whip-like extension | moves sperm cell |
| plasma membrane | lipids & proteins/outer layer of cell | encloses and regulates cell contents |