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AQA Biol4 15th June 2012

What do guys think 100 ums will be?

btw can someone advise me how to prepare for bio 5 essays? shall i actually prctice essays or ust memorise everything in bio and then see what question is

I'd hazard a guess around low 60s or 60ish (out of 75)

Reply 781

. . .

Original post by NightBear

Time was the main issue for me. -.-
The invigilator went "10 mins" and i thought "holy moly, havent even started the last 15 mark question!"

Invigilator said pens down.
*Carried on writing
Pens down
*Still writing
I said put your ****ing pens down
*Carries on writing and stopped just before he snatched it out my hand

Reply 782

Alfie1993

Does anyone know how I could figure out what i need in unit5 to get the grade I need?

Reply 783

. . .

Original post by Alfie1993

Does anyone know how I could figure out what i need in unit5 to get the grade I need?

What are your previous UMS scores and what grade do you need?

Reply 784

genia

6

what did u guys put for why the rate of photosynthesis is similar in tube A and B
one contained H ions and Atp
while the other grana
could you say atp and h ions were produced in grana for light independant reeaction?

Reply 785

TheBigDog

Okay a few things i'd like to clear up

Question 6b) why did the liquid move down? - i put o2 taken in but not exchanged in air for co2 because ts absorbed by potassium hyroxide, so the liquid is drawn in as o2 is taken in.

d) what would happen to liquid if anaerobic? - i put stays the same because no 02 taken in but co2 still released but its absorbed so doesn't push the liquid down.

Reply 786

NightBear

12

Original post by Alex J

I'd hazard a guess around low 60s or 60ish (out of 75)

That high? Even on the Jan 2012 paper you needed 58/75 for 100 UMS; I'd like to think it's lower for this paper.

Reply 787

canI?

Original post by excell

If I thought q^2 was 0.51 how many marks will I pick up?

1?

If you put the relative formulae down that would pick you a mark

Reply 788

. . .

Original post by genia

what did u guys put for why the rate of photosynthesis is similar in tube A and B
one contained H ions and Atp
while the other grana
could you say atp and h ions were produced in grana for light independant reeaction?

Yes that's what I put. Well ATP and NADPH is produced.

Reply 789

Nv100

Hey guys i found the very last question quite hard does anyone know why pests may become genetically resistant to pesticides? Basically does anyone know the answer to q8 c?
Thanks in advance

Reply 790

biofreak

Original post by ezeffy

I prepared sooooo much for this exam.....
its basically as if I wasted money for nothing!!!!

why did you pay for your exams?? and same the amount of revision I did for this! and you just know biol5 is going to suck big time

Reply 791

Alex J

1

Original post by NightBear

That high? Even on the Jan 2012 paper you needed 58/75 for 100 UMS; I'd like to think it's lower for this paper.

I don't know, you may be right, you can only really guesstimate what its going to be, the simple fact is we don't know. only time will tell..

Reply 792

. . .

Grade boundaries for A/B anyone?

Reply 793

NightBear

12

Original post by Nv100

Hey guys i found the very last question quite hard does anyone know why pests may become genetically resistant to pesticides? Basically does anyone know the answer to q8 c?
Thanks in advance

mutation occurs
some pests resistant to pesticide
these pests survive and more likely to reproduce
pass on their advantageous alleles
frequency of this 'advantageous allele' increases in the population

Reply 794

Noggster

42% was the answer for the hardy weinberg. They asked for heterozygotes only

Reply 795

Alfie1993

Original post by . .

What are your previous UMS scores and what grade do you need?

Unit 1: 74. Which is a B
Unit 2: 103 which is a B
3T: 54 Which is an A

From january I have 68 in unit 4 which is a C i repeated it today but I don't think I did better. I'm not sure what this years coursework mark was but it was definitely an A.

I need a B overall?

Reply 796

NightBear

12

Original post by Alfie1993

Unit 1: 74. Which is a B
Unit 2: 103 which is a B
3T: 54 Which is an A

From january I have 68 in unit 4 which is a C i repeated it today but I don't think I did better. I'm not sure what this years coursework mark was but it was definitely an A.

I need a B overall?

Sorry for butting into your conversation, but, chill :smile:

you need like 73/140 for Unit 5 to get a B overall :tongue:

That's like just over 52%!

Reply 797

sachinisgod

21

Guys what did you put down for the 3 marker -depth and temperature evaluation for the fishes?

Reply 798

mindlessvandalism

Starting to think that anyone who worte 41% (including me) will not get the mark. The answer is definitely looking like its 42% and i dont think they will have a range of answers they will accept because the answer was dead on 42%, stupid marks that ive threw away for not reading the question properly...again

Reply 799

Alex J

1

Original post by sachinisgod

Guys what did you put down for the 3 marker -depth and temperature evaluation for the fishes?

It is implied from the combination of the graph and table that as temperature changes there is a change in the species of fish that are present, and it could be explained by the fish each being adapted for different temperatures. However there is no evidence to say that there is any such causal link between the temperature of the water and the species of fish. Could be down to another factor such as O2 concentration in the water.

AQA Biol4 15th June 2012

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