Into and out of cells

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  • Created by: jordan98
  • Created on: 14-04-14 16:03
What is the definition for OSMOSIS?
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

Preview of the front of card 3

Card 4

Front

Give one similarity between diffusion and osmosis.

Back

Preview of the front of card 4

Card 5

Front

Give two differences between diffusion and active transport.

Back

Preview of the front of card 5

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