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9 Cards in this Set
- Front
- Back
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What is osmosis? |
The movement of water from a high concentration to a low concentration across a partially permeable membrane. |
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In which direction will the movement of water be? |
From the right side to the left side. This is because the left side is a more concentrated solution and so it diluted. |
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What is active transport? |
Active transport uses energy from respiration to move things against the concentration gradient. |
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Give an example of active transport. |
Some plants need to get nutrients from the soil that are only there at very low concentrations. |
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Why is osmosis important in plants? |
To gain water through their roots. Water in plant cells makes them turgid or stiff so that are able to hold the plant upright. |
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Why is osmosis important in animals? |
If osmosis into an animal cell is too great, the animal cell would swell and burst as they do not have a cell wall. |
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What does partially permeable mean? |
Only let some things through. i.e Cell membrane |
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What is a solute? |
The substance that dissolves. i.e Salt or sugar. |
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What is the solvent? |
The liquid that the substance is dissolved in. i.e Water or alcohol. |
