GCSE Biology, movement of cells summary

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Movement of substances summary


They are three different types of movements of particles that you need to know for your exam:


·         Diffusion

·         Osmosis

·         Active transport [this is TRIPLE AWARD only.]


Diffusion this is the movement of particles from an area of high concentration to an area of low concentration. It happens randomly and it crosses a partially permeable membrane.

This is either in a gas or a dissolved substance.
















It happens in the lungs mainly in the human body.


The way diffusion is sped up:


1.    Heat --> this gives particles energy to move.

2.    Concentration


Bethany Cunningham


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