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ib bio sl topic 1.2
only organelles and their functions
| Term | Definition |
|---|---|
| Ribosomes | Site of polypeptide synthesis |
| Cytoskeleton | Provides internal structures and mediates intracellular transport |
| Plasma membrane | Semi-permeable and selective barrier surrounding the cell |
| Nucleus | Stores DNA as chromatin; site of ribosome assembly |
| Smooth endoplasmic reticulum | Transports lipids between organelles |
| Rough endoplasmic reticulum | Transports proteins between organelles |
| Golgi apparatus | Involved in sorting, storing, modification, and export of secretory products |
| Mitochondrion | Site of ATP production |
| Peroxisome | Catalyzes breakdown of toxic substances |
| Centrosome | Radiating microtubules to form spindle fibers and contribute to cell division |
| Chloroplasts (plant cell only) | Site of photosynthesis |
| Vacuole (plant cell only) | Maintains hydrostatic pressure |
| Cell wall (plant cell only) | Provides support and mechanical strength |
| Lysosome (animal cell only) | Breakdown/hydrolysis of macromolecules |