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OCR 2010 A2 Biology Unit 2 - Control, Genome and Environment

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chuck111

does anyone have any past papers or questions for this exam?

There wa a revision pack posted by 'Remarkable' some time back in this thread , 130 pages of cellular control and lots on ecosystems.

Reply 2481

Remarqable M

chuck111

does anyone have any past papers or questions for this exam?

i posted earlier past paper questions pack for cellular control, biotech and sustainability :smile:

it is in here:

http://www.thestudentroom.co.uk/showthread.php?t=1166390&page=106

scroll down for sustainability :wink:

Reply 2482

ViolinGirl

InvoluntarySlacker

I mean F211: Module 1 and F212: 1, 2 and 3

Whats F211 and F212? I've forgotten.

Reply 2483

Remarqable M

ViolinGirl

Whats F211 and F212? I've forgotten.

lol f211 - cells, exchange and transport

f212 - molecules, biodiversity, food and health

Reply 2484

Chunkeymonkey62

For protein synthesis, do we need to know about the 3'/5' ends

Reply 2485

Alex-92

Chunkeymonkey62

For protein synthesis, do we need to know about the 3'/5' ends

I think this is more to do with PCR, and DNA probing more than cellular expression of genes (what I assume you mean by protein synthesis). I mean, correct me if i'm wrong someone :p:

Reply 2486

dopeyangel101

Chunkeymonkey62

For protein synthesis, do we need to know about the 3'/5' ends

looking at the spec, i cant see anything that mentions it but i would learn it just in case

Reply 2487

Chunkeymonkey62

Alex-92

I think this is more to do with PCR, and DNA probing more than cellular expression of genes (what I assume you mean by protein synthesis). I mean, correct me if i'm wrong someone :p:

Yea. Ive done modules 2 and 4, so going on to one today and 3 tomorrow.

I'll learn it just in case.

Reply 2488

dopeyangel101

I'm going over the spec atm, can anyone explain this point:
'describe with the aid of diagrams, the way in which a nucleotide sequence codes for the amino acid sequnce in a polypeptide'
may e i'm just being blonde but i dont understand what it means, thanks x

Reply 2489

Chunkeymonkey62

chuck111

umm in the specification, near the topic title
for example it says for cellular control and variation:

" From other modules within this specification:
F211 Module 1;
F212 Module 1, Module 2, Module 3."

i think thats right

Ahh. I think I get most of the links, e.g enzymes to Mod 1 and Variation in mod 3 etc.

Im glad I retook F212 this summer. :p:

Also, thinks for the revision cards. They are indeed useful! :smile:

Reply 2490

chuck111

dopeyangel101

umm thats transcription/translation lol :P

Reply 2491

chuck111

Remarqable M

i posted earlier past paper questions pack for cellular control, biotech and sustainability :smile:

it is in here:

http://www.thestudentroom.co.uk/showthread.php?t=1166390&page=106

scroll down for sustainability :wink:

thanks,but umm is that the right link cus it keeps taking me back to this page?

Reply 2492

dopeyangel101

chuck111

umm thats transcription/translation lol :P

ooooooooooooooo ok, i though so, just wasnt 100% sure, thanks :smile:

Reply 2493

chuck111

Remarqable M

lol f211 - cells, exchange and transport

f212 - molecules, biodiversity, food and health

nevermind i got them : :biggrin:

thanks so much

Reply 2494

alimurphy

what do centrioles do in meosis? make up the spindle fibre?
also, what is non-disjunction? two non related random questions there :smile:

Reply 2495

Nixani

wots the difference between management strategies and reclamation startegies??? :confused:

Reply 2496

ViolinGirl

alimurphy

what do centrioles do in meosis? make up the spindle fibre?
also, what is non-disjunction? two non related random questions there :smile:

Centrioles migrate to opposite poles of cell, and produce spindle fibres.
Non-disjuction is the failure of homologous pairs of chromosomes to separate during anaphase I.

Reply 2497

ViolinGirl

Nixani

wots the difference between management strategies and reclamation startegies??? :confused:

Management strategies aim to keep the ecosystem stable, in its current condition, reclamation stategies are those where the ecosystem is damaged and you need to replace the disrupted community with another.

Management strategies include things such as: Increasing the carrying capacity by providing extra food, the translocation of certain species to fragmented habitats.

Reclamation strategies- recolonising the area, captive breeding programs, perhaps enforcing protection on endangered species in the area. Attempting to increase these propulations.