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edexcel biology unit 2 and 3b

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Reply 160
Avatar for demdil
demdil
how is revision for paper 2 going? :smile:
Has anyone got the January 2012 unit 2 paper and mark scheme please?

It would be much appreciated!
Thanks
Original post by Nightwalker
G1 - Synthesis of new DNA and histone proteins and synthesis of new cell organelles.
S stage - Replication of the DNA that cause the DNA number to multiply.
G2 Stage - Replication of the cell organelles synthesized in G1 and synthesis of other RNA and proteins.

^ Again don't need to know this. Just know the stages of Mitosis - Prophase, Metaphase, Anaphase and Telophase.



Are you 100% on this? I learnt that DNA is synthesised in the S stage.

Also how do you know that we do not need to know it? Is it not on the spec? it's just in one of the books i think.

(I am not criticising you, just wondering :biggrin:)
Reply 163
Avatar for avipsita
avipsita
Original post by thegreenchildren
Are you 100% on this? I learnt that DNA is synthesised in the S stage.

Also how do you know that we do not need to know it? Is it not on the spec? it's just in one of the books i think.

(I am not criticising you, just wondering :biggrin:)


I agree I am no sure about thw S phase
Reply 164
Avatar for Sheo
Sheo
5
Is this thread for the Unit 2 paper also? there seems to be very little discussion..

or is there another thread? :smile:
(edited 11 years ago)
Original post by Sheo
Is this thread for the Unit 2 paper also? there seems to be very little discussion..

or is there another thread? :smile:



I was wondering that.
Reply 166
Avatar for Babyblue
Babyblue
1
well somebody link the original thread here or make this one a lil more active yeah? :wink:
Reply 167
Avatar for shahruk
shahruk
Original post by thegreenchildren
Has anyone got the January 2012 unit 2 paper and mark scheme please?

It would be much appreciated!
Thanks


here you go ~ :biggrin:
http://www.mediafire.com/?418nynasohiaa
Reply 168
Avatar for cisne
cisne
6
can anybody provide the ms for past papers on the old spec???
Reply 169
Avatar for jerichi
jerichi
http://www.thestudentroom.co.uk/showthread.php?t=2000363

The unit 2 thread for those who were wondering :smile:
xo

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