View source for Concentration Gradient

==Key Stage 3==
===Meaning===
A '''concentration gradient''' is when one region has a higher [[concentration]] of [[particle]]s than another.

===About Concentration Gradients===
: When there is a '''concentration gradient''' in a [[fluid]] [[particle]]s will [[diffusion|diffuse]] from the higher [[concentration]] to the lower [[concentration]] until there is no longer a '''concentration gradient'''.

==Key Stage 4==
===Meaning===
A '''concentration gradient''' is when one region has a higher [[concentration]] of [[particle]]s than another.

===About Concentration Gradients===
: When there is a '''concentration gradient''' in a [[fluid]] [[particle]]s will [[diffusion|diffuse]] from the higher [[concentration]] to the lower [[concentration]] until there is no longer a '''concentration gradient'''.
: [[Cell (Biology)|Cells]] are able to move [[particle]]s against the '''concentration gradient''' by [[Active Transport|active transport]].

===References===
====AQA====

:[https://www.amazon.co.uk/gp/product/1471851338/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851338&linkCode=as2&tag=nrjc-21&linkId=425855d5890466e47189e1c21b67a1ea ''Concentration gradient, pages 29, 32, GCSE Biology, Hodder, AQA '']
:[https://www.amazon.co.uk/gp/product/0008158754/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158754&linkCode=as2&tag=nrjc-21&linkId=27ad53b0283feeff7fc5ae04a9e205f180 ''Concentration gradient, pages 68-9, 86, 92, GCSE Biology; Student Book, Collins, AQA '']
:[https://www.amazon.co.uk/gp/product/1782945563/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945563&linkCode=as2&tag=nrjc-21&linkId=9a1d023a374038e6072f33c4f3cf808b ''Concentration gradients, page 20, GCSE Biology; The Revision Guide, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/0198359373/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359373&linkCode=as2&tag=nrjc-21&linkId=952a73bbb09d222ecc4b50d200679849 ''Concentration gradients, pages 14-16, 188-189, GCSE Biology; Third Edition, Oxford University Press, AQA '']
:[https://www.amazon.co.uk/gp/product/1471851354/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851354&linkCode=as2&tag=nrjc-21&linkId=9012a0d354024419214fb3ad5ac44ba0 ''Concentration gradients, pages 29, 31, 312, GCSE Combined Science Trilogy 1, Hodder, AQA '']