Diffusion is the movement of molecules down a concentration gradient from an area of higher concentration until they are evenly spread
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What is the difference between osmosis and diffusion?
Osmosis is the special type of diffusion of water from a high concentration to a low concentration through a seletively permeable membrane.
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What is passive transport?
Passive transport is the movement of molecules down a concentration gradient from high concentration to low concentration. This requires no energy.
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What is diffusion an example of?
Passive transport
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What happens to animal cells when they lose too much water?
When they lose water, they shrink and shrivel up.
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What has happened to a plant cell for it to be plasmorysed?
The plant cell would have lost too much water.
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What happens to animal cells when they gain too much water? What happens in plants?
If animal cells gain too much water they could burst, and plant cells could become turgid.
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Explain active transport.
The movement of molecules or ions from an area of low concentration to an area of high concentration, against the concentration gradient. This requires energy.
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Other cards in this set
Card 2
Front
What is the difference between osmosis and diffusion?
Back
Osmosis is the special type of diffusion of water from a high concentration to a low concentration through a seletively permeable membrane.
Card 3
Front
What is passive transport?
Back
Card 4
Front
What is diffusion an example of?
Back
Card 5
Front
What happens to animal cells when they lose too much water?
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