A2 Biology OCR June 2015 Revision Thread

Is there a way to tell the boundary for an A* and 100% on past papers as it doesn't list them on the grade boundaries?

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100 UMS is usually between 70-80 marks depending on the difficulty of the paper

Reply 3461

huniibehi

3

Original post by HeyThereHarry

i want a final past paper to do tomorrow. is there a particular legacy paper anybody would recommend?

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I'd recommend January 2011 purely because it's been the hardest legacy past paper so far with 60 being an A grade

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Reply 3462

raach.14

2

Original post by cinderella25

I also like cloning and biotechnology. I'd love if they asked on the advantages and disadvantages of using microorganism sin biotechnology. Or advantages and disadvantages in vivo and in vitro cloning. Or continues and batch culture.

Nitrogen cycle isn't too hard just learn the bacteria names and what they do. Measuring productivity isn't too bad tbh. Yeah meiosis with those crap dihybrid crosses and all that takes a lot of time to do and is just stupid

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Please can you list the advantages and disadvantages of in vivo vs in vitro cloning?

Reply 3463

raach.14

2

Original post by cr7alwayz

What do we need to know for outining the role of ATP in muscle contraction

ATP is used to break the actin-myosin cross bridge. It comes from 3 sources:

Aerobic respiration in mitochondria
Anaerobic respiration in muscle cell sarcoplasm, producing lactic acid
A transfer of a phosphate group to ADP from creatine phosphate

Reply 3464

HeyThereHarry

16

Original post by huniibehi

I'd recommend January 2011 purely because it's been the hardest legacy past paper so far with 60 being an A grade

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thank you! is that the central concepts paper?

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Reply 3465

bakedbeans247

20

any predictions for wednesday guys?

Reply 3466

cinderella25

11

Original post by raach.14

Please can you list the advantages and disadvantages of in vivo vs in vitro cloning?

ImageUploadedByStudent Room1434306466.414994.jpg

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Reply 3467

HeyThereHarry

16

Original post by bakedbeans247

any predictions for wednesday guys?

epistasis, nitrogen cycle, sex-linkage and apoptosis. Long question on comparison of types of cell division and their importance

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Reply 3468

Diamond Crafter

8

Original post by Lighfy

How did F214 go for you?

It wasn't an absolute atrocity but at the same time it wasn't a paper from the heavens either. I'd say it went okay. Although I did not like the peritoneal dialysis questions. I think under the time pressure I just freaked out over those questions as there's only about 4 lines about peritoneal dialysis in the textbook.
How about you?

Reply 3469

chyns

Original post by HeyThereHarry

epistasis, nitrogen cycle, sex-linkage and apoptosis. Long question on comparison of types of cell division and their importance

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where did you get your predictions from a teacher or you made them up?

Reply 3470

Lighfy

3

Original post by Diamond Crafter

It wasn't an absolute atrocity but at the same time it wasn't a paper from the heavens either. I'd say it went okay. Although I did not like the peritoneal dialysis questions. I think under the time pressure I just freaked out over those questions as there's only about 4 lines about peritoneal dialysis in the textbook.
How about you?

Yeah, the dialysis questions thew me off a bit. Think I'll be lucky to get a mark for those questions :/ apart from that though, I don't think the paper was too bad. Just praying that F215 is relatively straightforward!

Reply 3471

Diamond Crafter

8

Original post by Lighfy

Yeah, the dialysis questions thew me off a bit. Think I'll be lucky to get a mark for those questions :/ apart from that though, I don't think the paper was too bad. Just praying that F215 is relatively straightforward!

I've given up on praying and just going to take it head on whatever comes! (that was an awful innuendo, sorry! :colondollar:

)

On a more serious note, what would you say are your weakest topics on F215?

Reply 3472

loperdoper

15

Original post by Diamond Crafter

Oooh this is brilliant. By any chance do you know if said guy did one for F214?

You can find the info for that on WhatDoTheyKnow

Reply 3473

Diamond Crafter

8

Original post by loperdoper

You can find the info for that on WhatDoTheyKnow

Ooh! Thank you so much! :biggrin:

Reply 3474

raach.14

2

Original post by cinderella25

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Is this in the OCR text book? I know it must be as I've seen a question on it but I can't find it!

Reply 3475

cinderella25

11

Original post by raach.14

Is this in the OCR text book? I know it must be as I've seen a question on it but I can't find it!

Yeah in the OCR text book pg 176

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Reply 3476

Lighfy

3

Original post by Diamond Crafter

I've given up on praying and just going to take it head on whatever comes! (that was an awful innuendo, sorry! :colondollar:

)

On a more serious note, what would you say are your weakest topics on F215?

Hmm...definitely ecology! I think the content is too dull for my liking, which makes it hard to revise. I'm definitely better at the genetics stuff :biggrin:

What about you?

Reply 3477

kieransavage1

Can anyone tell me where I can find f215 June 2014 past paper and mark-scheme?