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AQA - BIOL4 - 13th JUNE 2014

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Hey Guyss, we've finished unit 4 and 5 and we have a mock week next week :frown:

i hate how aqa biology never show working out for the math questions
Original post by JacquelineJoy
Hey Guyss, we've finished unit 4 and 5 and we have a mock week next week :frown:

i hate how aqa biology never show working out for the math questions


We finished unit 4&5 too but our mocks were in Jan. We are starting our ISAs
But I agree with you in terms of the maths. It's annoying how they assume we are all good with maths or something :frown:


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Has anyone started ISA prep yet? If so, how are you preparing?
Reply 83
Avatar for Secret.
Secret.
14
Original post by mariagoretti
Ok lol
q=84/149+84=0.361
P+q=1.0
p=1.0-0.361=0.639
Heterozygous=2pq=2*0.639*0.361*100%

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Why is the black beetle q and not q2 q^2 as it's black wouldn't it have the genotype rr? :O
Original post by Secret.
Why is the black beetle q and not q2 q^2 as it's black wouldn't it have the genotype rr? :O


My bad..square root of 0.361=0.6
P=0.4
2pq*100

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Original post by mariagoretti
My bad..square root of 0.361=0.6
P=0.4
2pq*100

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The correct answer is 48%.Please pardon my error

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Reply 86
Avatar for Secret.
Secret.
14
Original post by mariagoretti
My bad..square root of 0.361=0.6
P=0.4
2pq*100

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Aah okay :biggrin:
I think I'm finally starting to get the hang of BIOL4, even though it's deadly boring.

ISA certainly was deadly boring. 😕

(No I haven't done the paper before I get a million PM's asking for answers! - I've only done the practical)


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Original post by Raymankiing
I think I'm finally starting to get the hang of BIOL4, even though it's deadly boring.

ISA certainly was deadly boring.

(No I haven't done the paper before I get a million PM's asking for answers! - I've only done the practical)


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What topic was the practical on mate :smile:
Original post by FutureMedic1009
What topic was the practical on mate :smile:


A2 one was on reaction times. So we had to put our hand in cold water for a minute and test our reaction time and do the same at room temp. All to do with homeostasis i think.

Honestly, the practical is incredibly easy, nothing to worry about

good luck

p.s the AS isa was on osmosis and potatoes and effect of concentration of black current juice on the mass of a potato.
Original post by Raymankiing
A2 one was on reaction times. So we had to put our hand in cold water for a minute and test our reaction time and do the same at room temp. All to do with homeostasis i think.

Honestly, the practical is incredibly easy, nothing to worry about

good luck

p.s the AS isa was on osmosis and potatoes and effect of concentration of black current juice on the mass of a potato.


Cheers for that mate
Reply 91
Avatar for katemaw
katemaw
Hi, does anyone have the June 2013 biol 4 paper? Thanks. :smile:
Guys, how is everyone preparing for the isa's coming up? revision techniques to answer the questions will be greatly appreciated, any ideas on content?


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Does anyone have a six marker on the nitrogen cycle and carbon , one that AQA will actually give marks for, with key words etc?

Puhleaaase :frown:.
Dno y im sooooo stressed.feels like all exams are just round the coner and no way near enough time to cover everythng in depth!!*sobs* :no:

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Reply 94
Avatar for katemaw
katemaw
Original post by NishNashNosh94
Look on page 4, some amazing person has the paper and the mark scheme!



Fantastic! Thanks
Original post by Matt_J
Enjoy :smile:


You beautiful, beautiful man!
Cannot thank you enough! Where the hell did you find it?
Reply 96
Avatar for ammaar95
ammaar95
On inheritance questions how do u recognise if its sex linked? :/

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Original post by ammaar95
On inheritance questions how do u recognise if its sex linked? :/

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I think it will let you know/give you a clue in the stem of the Question

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Original post by TSRuserrr9
I think it will let you know/give you a clue in the stem of the Question

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If the illness Is present exclusively in the phenotype females or the males n not both:biggrin:

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Reply 99
Avatar for pandabun
pandabun
1
Finding this unit awfully hard to get into! :hmpf:

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