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LE Cell Vocab
| Term | Definition |
|---|---|
| Prokaryote | no nucleus, fewer organelles, bacteria |
| Eukaryote | many organelles, membrane bound nucleus, plants, animals |
| Nucleus | “brain of the cell”; controls all cellular activity; contains DNA/chromosomes |
| Nucleolus | inside of nucleus; site of ribosome synthesis |
| Ribosomes | site of protein synthesis |
| Mitochondria | “powerhouse of cell”; site of cellular respiration; provides energy to cell |
| Endoplasmic Reticulum | transports materials throughout cell; rough ER- processes proteins; smooth ER –processes lipids & carbs |
| Golgi Bodies/Apparatus | packages & secretes cell products; stack of pancakes |
| Cytoplasm | fluid portion of cell; contains organelles; allows for transport of materials (cyclosis) |
| Lysosomes | “garbage collectors”; digest food particles; form from pinched off sections of golgi bodies |
| Cell/Plasma Membrane | controls what enters & exits cell; biphospholipid layer |
| Cell Wall | found in plant cells only; provides support & structure to cell |
| Centrioles | found only in animal cells; involved in mitosis & meiosis |
| Chloroplasts | found only in animal cells; site of photosynthesis |
| Passive Transport | movement of materials from high to low concentration without the use of energy |
| Diffusion | another name for passive transport |
| Osmosis | diffusion of water |
| Facilitated Diffusion | diffusion aided by protein carriers embedded in cell membrane |
| Active Transport | movement of materials from low to high concentration with the use of energy |
| Endocytosis | form of active transport that involves taking in of materials through the use of pseudopods |
| Phagocytosis | engulfing of large particles with pseudopods (cell eating) |
| Pinocytosis | engulfing of small particles including fluids with pseudopods (cell drinking) |
| Exocytosis | form of active transport that brings vacuole to cell membrane where it fuses then opens to expel wastes |