can somebody help me with the active transport, osmosis and diffusion topics for triple science for AQA, thanks xxx:)

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hi, my name is Eva, i am in top set of science and i'm revvising for triple stuff but i dnt relly understand what you need to know for those topics. thank you:)

Posted Fri 19th April, 2013 @ 23:10 by EVA

3 Answers

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Hi Eva, sorry an early post (well it might be late) but I have revision notes for both unit 2 and 3 for AQA triple award: http://getrevising.co.uk/resources/gcse_biology_complete_revision_notes 

If you still don't know what to learn, check the spec at the AQA website.

Hope it helps!

Answered Sat 20th April, 2013 @ 08:09 by Bethany Cunningham
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thanks Bethany, it came out late, but don't worry i'm still really grateful to you , i've just done my Biology and it went really good, please do ask me something if you need any help with anything :)

Answered Mon 20th May, 2013 @ 18:05 by EVA
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osmosis is when water moves from a high to low concentration through a phospholipid bilayer

diffusion is when substances move from a high to low concentration along the concentration gradient till an equilibrium is reached

active transport requires energy to move substances from a high to low concentration against the concentration gradient

hope it helps :P

Answered Tue 21st May, 2013 @ 12:10 by Phil