Biology Chapter 3
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26 terms
Terms | Definitions |
|---|---|
 Active Transport | Opposite of Simple Diffussion, material moves up the concentration gradient, uses ATP and a carrier protein. |
| Carrier Protein [Transport Protein] | Just like an enzyme, found in facilitated diffusion, and active transport. |
| Crenated [Plasmolyzed] | When cell shrinks by losing H20 |
| Concentration Gradient | A difference in concentration of a substance over a distance. |
| Cytoplasm | entire contents of the cell, except the nucleus, bounded by the plasma membrane. |
| Diffusion | the movement of a substance down its concentration gradient from a more concentrated area to a less concentrated area. |
| Endocytosis | the cellular uptake of materials in which the plasma membrane surrounds and engulfs extracellular materials |
| Exocytosis | Cells REMOVE waste material |
| Facilitated Diffusion | the spontaneous passage of molecules and ions, bound to specific carrier proteins, across a biological membrane down their concentration gradients. |
| Gated Channel | for material to move, RIGHT chemical must be present |
| Glycolipid | lipid covalently linked to a sugar or polysaccharide, an important part of animal cell membranes |
| Glycoprotein | protein linked to a sugar or polysaccharide, component of receptor molecules on the outer surface of cells |
| Hypertonic | Over, above, in excess, 70% H20, 30% Stuff |
| Hypotonic | Lower, less in environment |
| Isotonic | equal amount of stuff and stuff, H20 and H20 |
| Osmosis | Simple diffusion of water H20 |
| Osmotic Lysis | Animal version of hypotonic diffusion |
| Passive Transport | the diffusion of a substance through a biological membrane |
| Phagocytosis | type of endocytosis, cell EATING |
| Pincytosis | type of endocytosis, cell DRINKING |
| Pore | always open for material pending on size and charge |
| Pseudopodia | false feet, cell engulfs |
| Selectively Permeable Memberane | allowing some substances to cross while preventing others from crossing |
| Simple Diffusion | Movement of material from high to low concentration |
| Turgor [Turgid] | plant version of hypotonic diffusion |
| Vacuole [Vessicle] | Area where materials are moved in cytosis |
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