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7 Cards in this Set
- Front
- Back
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What is passive transport? |
Moves materials along their concentration gradient no energy is expended. |
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What is facilitated diffusion? |
Moves substances down their concentration gradient by using peoteins as channels. Carrier proteins move the substances by changing shape. |
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What is osmosis? |
Passive movement of water across the cell membranes along its concentration graident. Water moves from an area of high concentration to low. |
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What does the concentration of extracellular fluids effect? |
The concentration of extracellular fluids can affect movement of water across the cell membrane and measurements of this is known as toxicity. |
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What happens in hyportonic solutions? |
In hyportonic solutions cells burst due to water moving into the cell. In animal cell it becomes lysis where cells disintegrates by rupture of cell membrane. In animal cell it becime trugid ehicb means swollen and hard. The concentration of solute outside the cell is greater than in. |
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What happens in hyoertonic solutions? |
Cells shrivel due to water moving out of the cell. In animal cells it becomes cremated shrivel and shrinks. In plant cells it becomes flaccid weak, sofr and less vigour. The conecntration of solute outside the cell is less than the inside. |
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What is water movement in isotonic solution? |
Water moves both in and out of cell. |
