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Bio test 2
| Term | Definition |
|---|---|
| Cytoskeleton | Only in eukaryotes, provides shape, support and movement |
| nucleus | Stores genetic information |
| nucleolus | Where ribosomal RNA is made (rRNA) |
| nuclear membrane | “Nuclear envelope” double membrane, permits passage out and sometimes in |
| flagella | projections for movement, larger than cilla |
| cilla | projections for movement, smaller than flagella |
| Mitochondria | Energy converting organelle, Found in BOTH plants and animals, Bounded by double membrane, Inner membrane folds called cristae, Inner membrane encloses matrix |
| Chloroplast | Perform photosynthesis, Use solar energy to synthesize carbohydrates, Only in plants, Three-membrane system |
| Ribosomes | Carry out protein synthesis in the cytoplasm, found in both prokaryotes and eukaryotes, mix of proteins and ribosomal RNA |
| Rough Endoplasmic Reticulum | Complicated system of membranous channels and saccules, studded with ribosomes, modifies proteins in lumen |
| Smooth Endoplasmic Reticulum | Complicated system of membranous channels and saccules, continuous with rough ER, no ribosomes, function depends on the cell |
| Golgi Apparatus | Stack of flattened saccules, transfer station, receives vesicles from ER, modifies molecules, sorts and repackages for new destination |
| Lysosomes | Vesicles that digest molecules or portions of the cell, Digestive enzymes |
| Vesicles | Membranous sac, smaller |
| Vacuoles | Membranous sac, larger |