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9 Cards in this Set
- Front
- Back
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What is the electrochemical gradient? |
The electrochemical gradient is due to both concentration and charge gradient. Cell interior has overall -ve gradient and movement is from -ve to +ve. |
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What is uniporter, symporter and antiporter? |
Uniporter: only 1 substance moves across protein channel Symporter: 2 substances move across channel membrane but in the same direction Antiporter: 2 substances move across channel membrane but in the opposite direction |
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What is primary transport? |
Primary transport moves substances across the concentration gradient using ATP and transport proteins whilst maintaining the concentration difference across membrane. |
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What is secondary transport? |
Uses gradient generated by primary active transport to enhance movement of secondary substace across the membrane. The electrochemical graident set by primary active transport stores energy Which is used yo move substance against their own gradient. Therefore only 1 substance requires ATP and the substances can move in the same or the opposite direction. |
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What is bull transport |
Bulk transport is a type of active transport and involes changes to membrane to move material. |
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What receptor mediated endocytosis? |
More specific as receptros used to recognize what goes into the cell. . Example: Potoctyosis moves small molecules. |
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What exocytosis and endocytosis? |
Exocytosis moves materials out of the cell by changed un the cell membrane.
Endocytosis movement of material into the cell by changes in the cell membrane. |
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What pinocytosis? |
Moves small fluids into the cell. |
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What phagocytosis? |
Moves large macromolecules, whole Cells and celluar structures. |
