Year 12s: what will be the first way you research your future options? >>

AQA A2 Biology BIOL5 - 17th June 2015

Scroll to see replies

Anyone know the exam question for the second essay

I did
Protein synthesis
Oestrous
Mitosis and meiosis
Dna replication
Courtship

Reply 1861

Faaiz Shah

Is the ratio 2.27:1 ???? ****!!!
I got 118:52 i think

Reply 1862

caffeinefuelled

Original post by Faaiz Shah

I loved the gel electro question.
Did u talk about parent being homozygous recessive/dominant
And offspring hetrozygous and then i talked about about why the R was further then r

Yeah

Reply 1863

Phillipsabi7

Original post by Faaiz Shah

Ye i got 2.27 as well 118:52 i think

Would you get 1 or 2 marks for putting 118:53?

Reply 1864

Faaiz Shah

Original post by smoothER

Yeah

Phew

Reply 1865

Martin11

Original post by Faaiz Shah

I loved the gel electro question.
Did u talk about parent being homozygous recessive/dominant
And offspring hetrozygous and then i talked about about why the R was further then r

Ooo I did that, though I used the letters rather than saying parent was homozygous or offspring being hetero. Yay I got some marks...maybe

Reply 1866

jessiebon

What did people put for the question about gel electrophoresis and using the info to explain the results or something? I hated that question -.- I just put one parent is homozygous dominant and one recessive the recessive allele moves the least as it is the largest fragment and vice versa...

Reply 1867

Faaiz Shah

Original post by Phillipsabi7

Would you get 1 or 2 marks for putting 118:53?

Probs two. Ppl on here saying it was 118:56 so they will have large range but i think as long as u did 118:52 plus or minus 2 u will get 2 marks :smile:

Reply 1868

biojames

Have to say I revised for a day missed most of genetics out and still thought that was such a nice paper. Thanks AQA :smile:

Reply 1869

jessiebon

Original post by Martin11

Ooo I did that, though I used the letters rather than saying parent was homozygous or offspring being hetero. Yay I got some marks...maybe

Oh phew! That's something along the lines of what I put :smile:

Reply 1870

may_1

what did everyone put for the one about the IAA and describing why the root moved down because of the carrier proteins?

Posted from TSR Mobile

Reply 1871

Faaiz Shah

Original post by Martin11

Ooo I did that, though I used the letters rather than saying parent was homozygous or offspring being hetero. Yay I got some marks...maybe

I was gonna use letters but i am stupid so i forgot ahhah. I think i lost 1 mark on questionnaire and 3 on monoclonal and i think i got atleast 17 on essay
How about u bro??

Reply 1872

jessiebon

Original post by Faaiz Shah

Probs two. Ppl on here saying it was 118:56 so they will have large range but i think as long as u did 118:52 plus or minus 2 u will get 2 marks :smile:

I think you will loose the mark for not rounding, just for my experience with past papers..

Reply 1873

biojames

Original post by may_1

what did everyone put for the one about the IAA and describing why the root moved down because of the carrier proteins?

Posted from TSR Mobile

Why the roots moved down was it not why the roots moved away from the salt ?

Reply 1874

may_1

Original post by biojames

Why the roots moved down was it not why the roots moved away from the salt ?

yeah that's what I mean what did you put ?

Posted from TSR Mobile

Reply 1875

anonlad

Original post by biojames

Have to say I revised for a day missed most of genetics out and still thought that was such a nice paper. Thanks AQA :smile:

I think the van hijackers are the real heroes here

Reply 1876

Faaiz Shah

Original post by jessiebon

I think you will loose the mark for not rounding, just for my experience with past papers..

Its not accurate to say 2.3:1 or 2.2:1 theres such a huge difference. Lol i dunno i thought 2.d.p would be minimum since the question didnt specify.

What du u think the grade boundries will be??

Reply 1877

apuleius

Anyone got a cheeky unofficial markscheme 👌

Reply 1878

bg9876

Original post by Plasmapause

I have.
I mentioned domestic rearing, In vitro replication, the proof that DNA is hereditary material and other stuff

Original post by Kittyflorence

Anyone know the exam question for the second essay

I did
Protein synthesis
Oestrous
Mitosis and meiosis
Dna replication
Courtship

The importance to humans of controlling growth, development and reproduction of organisms. (something like that anyways)
I talked about intensive farming, preventing succession, tumour supressors and treating cystic fibrosis (process of making recombinant dna and using viruses etc) Do you think that is ok/irrelevant? Thanks!

Reply 1879

biojames

Original post by may_1

yeah that's what I mean what did you put ?

Posted from TSR Mobile

Someone to do with the side with the salt had more carrier proteins so more iaa moves out down the conc gradient allowing it to elongate. Then a bit about water potential what about you ?