AQA A2 Biology BIOL5 - 17th June 2015

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Hey guys, im not sure if these were posted before, but in case they weren't here are some really useful Biol Unit 5 notes :

https://7def787516e26c878dc93b38d6ceba5f41124eea.googledrive.com/host/0B1ZiqBksUHNYaUI1b2xvb0QwSDQ/Key%20Points%20-%20Unit%205%20AQA%20Biology%20A-Level.pdf

hope they help :smile:

Reply 481

prophetkid

Original post by rashed_k

how long do you think the essay should be?

Mine are about 600-700 words, which is about 2 A4 lined pages; which equates to about 4 pages in the exam paper. It does depend on how large your writing is though.

Reply 482

Hudl

Has anyone got the link to pre written essays for all the essays that have previously comee up as I don't think I'll have enough revision time to do the essays but I would like a but of a plan

Reply 483

prophetkid

Original post by Hudl

Has anyone got the link to pre written essays for all the essays that have previously comee up as I don't think I'll have enough revision time to do the essays but I would like a but of a plan

I have four essays which have been marked at A/A* grade if they are any use? :smile:

The essays are:
Causes of Disease in Humans
Uses of DNA Technology
Importance of Shapes Fitting Together
CO2 may affect organisms directly and indirectly

Reply 484

Hudl

Original post by prophetkid

I have four essays which have been marked at A/A* grade if they are any use? :smile:

The essays are:
Causes of Disease in Humans
Uses of DNA Technology
Importance of Shapes Fitting Together
CO2 may affect organisms directly and indirectly

Yes please upload them on here thanks or send them via pm

but surely someone would have done all the essays to an A* level and posted them online, surely

Reply 485

EmilyC96

If I post my essay in about half hour would anyone be willing to mark it? I'm not aiming for full marks so don't expect much, I'd just like an idea of how I'm doing ☺️

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Reply 486

prophetkid

Original post by Hudl

Yes please upload them on here thanks or send them via pm

but surely someone would have done all the essays to an A* level and posted them online, surely

Here you go :smile:

Carbon dioxide may affect organisms directly or indirectly.docx14.6KB

Uses of DNA Technology.docx13.5KB

The Importance of Shapes Fitting Together in Cells & Organisms.docx13.2KB

The Causes of Diseases in Humans.docx14.7KB

Reply 487

EmilyC96

I'd really appreciate it if someone could glance through my essay and let me know how I'm doing. As said before I'm not aiming for full marks so don't expect a spectacular essay. Ps sorry if you can't read it my writing gets very messy when I rush

Attachment not found

ImageUploadedByStudent Room1434024017.706572.jpg

ImageUploadedByStudent Room1434024040.420327.jpg

ImageUploadedByStudent Room1434024062.118727.jpg

Thank you

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ImageUploadedByStudent Room1434023980.015078.jpg137.7KB

Reply 488

rashed_k

Original post by sleepisheaven

3-5 sides I hear

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Thanks!

Reply 489

rashed_k

Original post by prophetkid

Mine are about 600-700 words, which is about 2 A4 lined pages; which equates to about 4 pages in the exam paper. It does depend on how large your writing is though.

Cheers

Reply 490

samanthamg

Do essays have to include diagrams and info/examples that aren't on the spec?

Reply 491

lyricallies

If the essay was on proteins and the role of proteins, what would everyone suggest should be included ? :smile:

Reply 492

Ozy96

Original post by lyricallies

If the essay was on proteins and the role of proteins, what would everyone suggest should be included ? :smile:

Enzymes involved in the digestive system (Lactase, Maltase etc.)
Protein structure
Haemoglobin - involved in associating and dissociating oxygen, could add oxygen dissociation curves too (High affinity, Low affinity)
Receptor proteins and relay proteins involved in cell division (proto-oncogenes and tumour suppressor genes)
Polypeptide synthesis
Could maybe talk about photosynthesis&nitrogen cycle they involve enzymes too.
Muscle contraction - Tropomyosin & Troponin

Reply 493

Vengefulcandy

Original post by lyricallies

If the essay was on proteins and the role of proteins, what would everyone suggest should be included ? :smile:

1 - primary/secondary/tertiary structure of a protein
2 - Structural roles
3 - Movement involving muscles
4 - Channel/ carrier proteins (transport)
5 - Enzymes
6 - Chemical Hormones/Mediators

Describe each one about with 100-125 words including two examples in each so for Structural you could use the examples of keratin and collagen. Talk about their structure then why it is important. Repeat and watch the marks pile up

Reply 494

lyricallies

Thankyou that's really useful :smile:

Reply 495

Vengefulcandy

Original post by Ozy96

Don't talk about polypeptide synthesis as you will probably lose marks because it's irrelevant to the title

Reply 496

Ozy96

Original post by Vengefulcandy

Don't talk about polypeptide synthesis as you will probably lose marks because it's irrelevant to the title

Yeah you're right, my bad. we could also talk about how translation is prevented by siRNA how it guides the enzyme and whatnot.
Also, what do you think of the likelihood this will come up? It hasn't been asked yet I don't think...It would be god sent if it does come up. Although AQA aren't that generous.