| Term | Definition |
|---|
| prokaryotic | type of cell that lacks membrane-enclosed organelles |
| eukaryotic | type of cell that possesses membrane-enclosed organelles |
| plasma membrane | outer boundary of cell; regulates what enters and exits a cell |
| cytoplasm | semi-liquid material inside plasma membrane |
| examples of eukaryotic cells | animals, plants, fungi and protists |
| nucleolus | structure within nucleus that produces ribosomal RNA |
| nucleus | organelle that contains DNA and is surrounded by an envelope with pores |
| ribosome | site of protein synthesis; composed of two subunits |
| polyribosomes | several ribosomes associated with a single mRNA molecule |
| endoplasmic reticulum | a series of membraneous channels and saccules, continuous with the nuclear membrane |
| rough ER | endoplasmic reticulum covered with ribosomes; acts to process and modify proteins |
| smooth ER | endoplasmic reticulum WITHOUT ribosomes; synthesizes various lipids, detoxifies drugs |
| Golgi apparatus | a series of flattened saccules resembling pancakes; collects, sorts, packages, and distributes proteins and lipids throughout cell |
| lysosomes | membrane bound sacs that contain digestive enzymes; break down foreign substances or worn out cell parts |
| vacuoles | membranous sacs that store various substances like pigments, water, toxins, nutrients |
| peroxisomes | membrane bound vesicles containing enzymes that speed up reactions which produce hydrogen peroxide as a product |
Combine with other sets
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