Edexcel A2 Biology Unit 4(6BIO4) 13/06/11 - OFFICIAL THREAD !

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Original post by Phenylethylamine_

Can anyone please upload the 3 past papers? Or link me where they are. I've done them before, so I only have hard copies with answers in it..

http://www.thestudentroom.co.uk/showpost.php?p=32015512&postcount=157

Original post by darkiee

Burr, How is revision going everyone, I really dont know what to read anymore :s-smilie:

. I have doen everything I think I can any suggestion?

Do the past papers again, or read your notes again. Alternatively, rest or sleep lol

(edited 12 years ago)

Reply 261

jo.t

Hey everyone,
Is this paper synoptic? i didnt think it was but in january they asked about plant fibres soo... :/ and if it is what parts are people revising from previous topics

Reply 262

imaam

Do we have to know about the humoral response (activation and effector stages) and cell mediated response? We learnt it in calss, but its not in the spec or the CGP revision guide?????

Reply 263

darkiee

Original post by InItToWinItGetIt?

Do the past papers again, or read your notes again. Alternatively, rest or sleep lol

I might just rest and sleep, now then wen iw ake up at 1am no more sleeping till Sunday Night

Reply 264

idiotone

How does temperature affect photosynthesis?

Reply 265

pearlover

Original post by idiotone

How does temperature affect photosynthesis?

from what ive read if the temperatures are too low this will limit photosynthesis since the enzymes controlling the reactions and that are involved will be working below their optimum temperature...

Reply 266

Legit

Anyone know how I can report a stupid examiner? I ordered my paper back for BIO4 I did this January. I didn't bother looking at it, i got 96 UMS/120.

I just did the paper again now, scored 120UMS, and then checked my old paper to find that the stupid a55hole didn't give me ATLEAST, and i don't use this term lightly, 8 marks.. I would of got 120UMS, no need for a resit, so annoyed atm :'(

Reply 267

InItToWinItGetIt?

Original post by Legit

Should have looked at it lol. You might as well have seeing you went to the trouble of getting the paper back. But no point worrying about that now.

Reply 268

darkiee

Hello Everyone, How is it going?

Reply 269

darkiee

This is few notes that someone from this website made that i think can help. If you wants some last minutes brush up on the syllabus.

Unit 4 notes-1.pdf197.0KB

Reply 270

InItToWinItGetIt?

Does Mycobacterium Tuberculosis live inside cells?

Reply 271

darkiee

Original post by InItToWinItGetIt?

Does Mycobacterium Tuberculosis live inside cells?

All i know is, when they are inside the lung, they multiply slowly but those that mean they live inside the cell?

Reply 272

InItToWinItGetIt?

Original post by darkiee

All i know is, when they are inside the lung, they multiply slowly but those that mean they live inside the cell?

There is a question that asks ''How is TB caused?''

and the MS says as one of the points, ''bacteria live / reproduce / active inside cells''

so was wondering, because I thought they can stay dormant inside tubercules. :s-smilie:

Reply 273

darkiee

Inside the lungs, Inside cells hmm confused dunno

Tubercules are the dead bacteria and macrophages right

Reply 274

darkiee

Original post by InItToWinItGetIt?

so was wondering, because I thought they can stay dormant inside tubercules. :s-smilie:

This is active Tuberculosis,

Reply 275

lbavfc

Does anyone have/ or know where I can get, the mark scheme for January 2011 please?

Reply 276

idiotone

Original post by InItToWinItGetIt?

Yeah they can survive and breed inside whilst remaining dormant.

Reply 277

idiotone

Competition between bracken and heather occurs mainly on moorland and heath, which exists as habitats because of sheep grazing.

Describe what you think might happen in areas of moorland and heath if sheep were removed. (4)