AQA Biology B3- Exchange of Materials, Breathing and the Circulatory System

A powerpoint outlining all the facts you need to know for a large proportion of the B3 unit of AQA GCSE Biology, part one.

Uploaded: Wed 23rd April, 2008 @ 18:25 by Rachel

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Comments

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Yasmin-louise

Fri 2nd May, 2008 @ 09:35

very helpful!!!!

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Tom Buckner

Sat 10th January, 2009 @ 15:02

yeah nice one

useful seen as i need to do some last minute revision for the test on monday!!

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cheryl

Sat 10th January, 2009 @ 15:40

Very useful! Great resource for quick reference before the test. THanks X

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simon lock

Sun 11th January, 2009 @ 11:44

woo

even bitesize doesnt have triple science revision

"snarles"

but thanks =)

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Kris Gray

Tue 3rd March, 2009 @ 21:08

Good revision but diffusion isn't through a partially permeable membrane, that's osmosis.

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04rair

Tue 24th March, 2009 @ 19:47

great help

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ua

Tue 31st March, 2009 @ 17:56

this is great thanks - do you have any more for the rest of B3???

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Faye parker

Wed 15th April, 2009 @ 16:15

really really helpful

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Emmeline

Wed 15th April, 2009 @ 17:57

Good. A lot of writing but it did help me.

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angelic-child :]

Thu 7th May, 2009 @ 20:37

Thanks! great stuff :D

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Annie

Sun 10th May, 2009 @ 15:24

Quite helpful but a partially permeable membrane is osmosis and diffusion is just down a concentration gradient :) but still helpful

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abi

Thu 14th May, 2009 @ 13:52

i love youu :)

haha thanks absolutely fantastic!!

But yeah as other people said, diffusion is the net movement of particles moving from a high concentration to a low concentration (across the concentration gradient) whereas Osmosis is the diffusion of water across a partially permeable membrane.

Brilliant :D

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Ben

Sat 16th May, 2009 @ 14:11

Good but missed out a lot about the kidneys which is needed a lot for B3 further biology,

for example dialysis and transplants pros and cons,

why some substances re in urine and not others, the effects of a faulty kidney, like protein in urine

other than that very good powerpoint

i am angry how bitesize provide no materials as they were my life line for the past two in each p1 p2 c1 c2 b1 b2 so that sucks

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Hayley

Tue 19th May, 2009 @ 18:32

Really Helpful. Thankyou =]

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Shagana

Tue 19th May, 2009 @ 20:18

thanks :D