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

OCR Biology A Exam Thread (Breadth - May 26, 2016 and Depth - June 7, 2016)

Scroll to see replies

Reply 1420

Desouza123

Original post by 4nonymous

I think it asked why P spent more than R, I said that there was more DNA to replicate? LOL probably wrong

Yeah thats what I put lol :smile:

Reply 1421

M0nkey Thunder

Original post by Desouza123

Yeah thats what I put lol :smile:

Same xD

Reply 1422

haes

Original post by 4nonymous

I think it asked why P spent more than R, I said that there was more DNA to replicate? LOL probably wrong

Oh i said this too!!

Reply 1423

User1452521

Original post by 4nonymous

I think it asked why P spent more than R, I said that there was more DNA to replicate? LOL probably wrong

Yeah that's what i put as well :smile:

Reply 1424

Jitesh

Original post by 4nonymous

I think it asked why P spent more than R, I said that there was more DNA to replicate? LOL probably wrong

put that as well lol

Reply 1425

IntellectualBoss

go to http://www.thestudentroom.co.uk/showthread.php?t=4148503&p=65532781#post65532781 for unofficial mark scheme

Reply 1426

Awsomedude

what did people put for when they said how was there methilin-resistant bacteria,and the question after that?

Reply 1427

Beanheadnigerian

Original post by Jitesh

The question about agar, did you write it was extracellular?

Yeah i put that!

Reply 1428

Firenze26

Original post by Awsomedude

what did people put for when they said how was there methilin-resistant bacteria,and the question after that?

Wait, where could that be found? I thought the question for that was just asking what evidence shows that the resistance already existed before

Posted from TSR Mobile

Reply 1429

AnnaRainbows

Original post by haes

Oh i said this too!!

Oops I put that it made a mistake in the previous stage so it had to go back and fix it before proceeding to another stage... Damn

Reply 1430

Awsomedude

Original post by Firenze26

Wait, where could that be found? I thought the question for that was just asking what evidence shows that the resistance already existed before

Posted from TSR Mobile

Im sorry I meant that

Reply 1431

Firenze26

Original post by Awsomedude

Im sorry I meant that

Personally, and pretty sure this was wrong, I wrote the fact that there were bacterial colonies left in the first place after the medicine was introduced showed that there were already resistant bacteria in the sample thing.

For the second one, I think it's about how the proportion changed, I wrote mitosis... yeah, don't really know why I wrote that...

Wbu?

Reply 1432

11234

Did anyone say use a colorimeter for the improvements to accuracy

Reply 1433

xsrajabx

Any unofficial mark schemes?

Posted from TSR Mobile

Reply 1434

Katie Gardner

Original post by AnnaRainbows

Oops I put that it made a mistake in the previous stage so it had to go back and fix it before proceeding to another stage... Damn

I put that too.. thought at G0 the cell could be killed???

Reply 1435

Firenze26

Original post by xsrajabx

Any unofficial mark schemes?Posted from TSR Mobile

IntellectualBoss just posted one

Original post by IntellectualBoss

go to http://www.thestudentroom.co.uk/showthread.php?t=4148503&p=65532781#post65532781 for unofficial mark scheme

Reply 1436

iamDev

What doyou reckon 45 /70 is gonna be

Reply 1437

ChelK321

Original post by Desouza123

Cant believe I got the 1st question wrong, feel so stupid :colonhash:

Same

I was going to go back and change it but ran out of time. But I feel like for most of the questions on this paper I either had to read them about 5 times to work out what they actually meant or spend ages deliberating over what answer to put.

Reply 1438

ChelK321

Original post by iamDev

What doyou reckon 45 /70 is gonna be

An A (

)

Reply 1439

James3000117

I said that since it took double the amount of time it has double the amount of DNA, therefore the one that took half the time must be a haploid cell and the one that took double must be diploid

remember it is possible for haploid cells to undergo mitosis in some organisms (such as the one on the page before this question)