OCR Biology F212 (Molecules, Biodiversity, Food and Health)- 21st May 2012

Original post by Dave23

I always used to hate biodiversity and all that stuff but since I've revised it again I think that it's OK. Probably prefer it to that immunity B/T lymphocytes stuff. Lot of confusing words in that. :confused:

yes this time i revised biodiversity hard not to make mistakes again

Reply 322

Raj K

one huge huge tip!...DO THE PAST PAPERS..you'll find that all the questions are so so similar..!!

Reply 323

Original post by Raj K

one huge huge tip!...DO THE PAST PAPERS..you'll find that all the questions are so so similar..!!

hi raj from which year to year/

Reply 324

fayled

Original post by otrivine

- isolation
- atifical breeding
- mating

artificial breeding?

Reply 325

Original post by fayled

artificial breeding?

sorry meant artifial selection

Reply 326

Raj K

Original post by otrivine

hi raj from which year to year/

hey do all the recent ones on the ocr website. do them again AND AGAIN AND AGAIN until you get 90% or more..and make sure you understand it and anything you get wrong..go back to your notes and figure out what you should have put..i can guarantee you can get an A this way..i must say i hated this exam SO MUCH.

Reply 327

dwydwy

Quick question do cytokines act a chemicals for cell signalling, do they bind to plasma receptor or what?!
Not quite sure revision isn't going well haha!

Reply 328

Salmonidae

1

Original post by dwydwy

Quick question do cytokines act a chemicals for cell signalling, do they bind to plasma receptor or what?!
Not quite sure revision isn't going well haha!

He's I'm quite sure they act like any other hormone :smile:

remember they are released from t helper cells :smile:

Reply 329

chiny94

8

Isn't cytokines like the big category for chemical messengers by several different cells? for example, macrophages releasing monokines to attracted the neutrophils; and T,B and macrphages release interleukins which stimulate the mitotic division and cell differentiation? And since they are chemical signals, they are binded with target cells and I'm guessing same thing happens like the cell recognition - complementary shape, degree of specificity blahblah

Reply 330

Salmonidae

1

Original post by chiny94

Isn't cytokines like the big category for chemical messengers by several different cells? for example, macrophages releasing monokines to attracted the neutrophils; and T,B and macrphages release interleukins which stimulate the mitotic division and cell differentiation? And since they are chemical signals, they are binded with target cells and I'm guessing same thing happens like the cell recognition - complementary shape, degree of specificity blahblah

For f212 all we are interested in is t helper cells cytokines to activate division of b cells :smile:

Reply 331

chiny94

8

Original post by Salmonidae

For f212 all we are interested in is t helper cells cytokines to activate division of b cells :smile:

Cool! But just making sure since in F211 there were so many application questions and suggest questions! So F212 might be of that same difficulty so i'm trying to soak in all the information! So not working though haha... Ah better revise stats though actually since I have stats exam on Friday eekkkk!

But yeah, I need to do so well on this to get an A since my coursework is on B as it is and I think I have underperformed on F211! Ready for it all then? :biggrin:

Reply 332

Ketchup'n'Mustard

13

Original post by otrivine

i did it in Jan 2012 and got a depressing C :frown:

cause i lost so many marks in biodiversity part i hate you parrots lool

What did you get in your F211 Unit 1 exam? (I remember seeing your posts in the revision thread in jan)

Reply 333

Original post by Ketchup'n'Mustard

What did you get in your F211 Unit 1 exam? (I remember seeing your posts in the revision thread in jan)

hi i did well got a High B and for my coursework practical got 40/40 marks i only need 112ums in unit 2 for an A?

Reply 334

fionywy

Original post by Harriet : )

A dream!? More like nightmare haha! Much prefer one on DNA replication or lymphocytes :rolleyes:

Hoping this paper is nicer than the January one :colone:

heyaaa... can anyone teach me about B and T lymphocyte??
i havev been figuring out the whole night but still dont get it

thanks

Reply 335

fionywy

Original post by Raj K

one huge huge tip!...DO THE PAST PAPERS..you'll find that all the questions are so so similar..!!

once they are asking another way...i dont really know how to answer :frown:

Reply 336

dwydwy

Original post by chiny94

Cool! But just making sure since in F211 there were so many application questions and suggest questions! So F212 might be of that same difficulty so i'm trying to soak in all the information! So not working though haha... Ah better revise stats though actually since I have stats exam on Friday eekkkk!

But yeah, I need to do so well on this to get an A since my coursework is on B as it is and I think I have underperformed on F211! Ready for it all then? :biggrin:

Thanks guys :smile:

How do you feel about the stats tomorrow? And are we allowed to all about the c1 yesterday?

Reply 337

louci

7

guys help me !!!!!!!!!
plzzzzzzz
can anyone i mean .... anyone plzzzzz
go through the selective breeding /natural selection part for me !!!!!!!!!!!!!!!!!!!!!!!!!!!!!
plzz i do not understand a single thing
everytime i went through a questions in the pat paper i end getting 1 or even 0 ot the total marks
plzzz help me out guys !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Reply 338

Harriet : )

10

Original post by fionywy

heyaaa... can anyone teach me about B and T lymphocyte??
i havev been figuring out the whole night but still dont get it

thanks

I've pm'd you explaining it :smile:

Reply 339

Raj K