Cell Movement

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  • Created by: popsgee
  • Created on: 03-05-16 09:47
What is diffusion?
The net movement of particles of a gas or a solute from an area of high concentration to an area of an area of low concentration
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What is net movement?
Overall movement..... net movement= particles moving in - particles moving out
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What does diffusion take place because of?
The random movement of particles and the motion of the particles causes them to bump into each other and this moves them around
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What is the concentration gradient?
The gradient between an area where a substance is at a high and an area where it is at a low concentration
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What makes a steeper concentration gradient?
The bigger the difference, the steeper the concentration gradient and the faster the rate of diffusion
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Does temperature affect the rate of diffusion?
Yes. Increased temperature means that the particles move more quickly . When this happens, diffusion happens more rapidly as the movement of particles speeds up
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What are simple sugars?
Small carbohydrate molecules made up of single sugar units or two sugar units joined together
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Give an examples of a simple sugar
Glucose
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Explain how diffusion occurs across a cell membrane?
Dissolved substances move into and out of cells by diffusion across the cell membrane
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Explain how diffusion occurs in the lungs?
The
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Other cards in this set

Card 2

Front

What is net movement?

Back

Overall movement..... net movement= particles moving in - particles moving out

Card 3

Front

What does diffusion take place because of?

Back

Preview of the front of card 3

Card 4

Front

What is the concentration gradient?

Back

Preview of the front of card 4

Card 5

Front

What makes a steeper concentration gradient?

Back

Preview of the front of card 5
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