Osmosis is the net movement of water molecules from a region of high concentration to a region of low concentration across a partially permeable membrane.
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What is DIFFUSION?
Diffusion is the net movement of molecules from their region of higher concentration to their region of lower concentration. Net movement is the average of the movement of all molecules.
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What is ACTIVE TRANSPORT?
Active transport makes it possible for cells to absorb ions fro very dilute solutions, E.G. Root cells absorb minerals from soil water, small intestine cells absorb glucose from digested food in the gut into the body.
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Give one similarity between diffusion and osmosis.
Neither diffusion or osmosis need energy
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Give two differences between diffusion and active transport.
Diffusion does not need energy but active transport does need energy. Diffusion takes place down a concentration gradient whereas active transport takes place against a concentration gradient.
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Other cards in this set
Card 2
Front
What is DIFFUSION?
Back
Diffusion is the net movement of molecules from their region of higher concentration to their region of lower concentration. Net movement is the average of the movement of all molecules.
Card 3
Front
What is ACTIVE TRANSPORT?
Back
Card 4
Front
Give one similarity between diffusion and osmosis.
Back
Card 5
Front
Give two differences between diffusion and active transport.
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