OCR Biology AS F211 May 2012

write there were 6 questions all with sub sections lets work out the questions and sub sections- no of marks for each question (total should be 60) when we get answers for them all I post an unofficial markscheme rough one

1. mitosis (1mark)
why is dna required or something (2mark)
homologous pair of chromosomes (3mark)
function and location of squamous and ciliated epithelium
what is a tissue (2)

2. name B, D, F
extracelluar protein or so
active process of moving the extracelluar protein
function of golgi app (2 mark)
2 function in the pic which would not be in prokaroytic cells (2marK)
1 feature of prokaryotic which is not present in eukaroytes(1 mark)


3.



4.



5.



6. sugar transported:sucrose (1mark
tissue which transports them: phloem (1mark)
how are sugars actively transported into phloem? (3 mark)

does any one have an unofficial amrkcheme for AS OCR f211 14 may?

also can you tell me what you guys said for the question on lung capacity when it decreases from B to C

I literally wrote about diaphragm relaxes external inter coastal muscles relax and volume capacity decrease and the air pressure increases.

hopefully you guys done really well

BTW the three labels were:

Cell surface membrane
vesicle
ribosome

Good luck! hopefully your A2 paper will balance it out though. whats your offer for?

In that order?

Yeahh hoping so!! it's given me motivation so thats good i suppose :P
Its AAA. EEK!
But i'm on track for a B in Bio. Got a month to get that up!

I sat both the one today and the one in Jan and it has to be said this one was a lot harder. I was a lot more prepared this time and still this one was worse. There was a lot more open ended questions in this paper than the last and required you to use your own knowledge and (infer from it) much more than this one. I hope the grade boundaries are nice.

Also I knew that the question was heart rate, but forgot to write it down /idiot

Over all what did people think of it?

i pretty much put the same answer for those 'fluctuations in pressure' questions, i found alot of the questions to be really ambiguous! Lol, i put to put in a solution that had a lower water potential than the cytoplasm of the red blood cell, but i dunno if thats right, that question like many of the others, was weird!

ah best of luck where will you be studying and which course? good luck! how much harder is A2, I was hoping as its more understanding of processes, it'll be easier but now im doubting that :/

write there were 6 questions all with sub sections lets work out the questions and sub sections- no of marks for each question (total should be 60) when we get answers for them all I post an unofficial markscheme rough one

1. mitosis (1mark)
why is dna required or something (2mark)
homologous pair of chromosomes (3mark)
function and location of squamous and ciliated epithelium
what is a tissue (2)

2. name B, D, F
extracelluar protein or so
active process of moving the extracelluar protein
function of golgi app (2 mark)
2 function in the pic which would not be in prokaroytic cells (2marK)
1 feature of prokaryotic which is not present in eukaroytes(1 mark)


3. tidal volume (1 mark)

B-C (4 marks) exhalation

60/5= 12

why is not all the air expelled? (2 marks)



4.the one about plant cell in water (5 marks)
what could the student do to see the RBC without it bursting (1mark)



5.
the heart rate -beats per minute

lots on the heart and stuff cant remember atm

describe the change in pressure (3marks)

6. sugar transported:sucrose (1mark
tissue which transports them: phloem (1mark)
how are sugars actively transported into phloem? (3 mark)

was the last question 3 or 4 marks??

ah best of luck where will you be studying and which course? good luck! how much harder is A2, I was hoping as its more understanding of processes, it'll be easier but now im doubting that :/

Corrrrrrrrrrrrect. Although you could have said about stretched elastic fibres recoil, but you would have already got full marks

Ok this pc at school is so slow so i cant find the person who wrote the mark scheme thing.
But for the labelling of the organelles I put plasma membrane not cell surface membrane.
This may sound dumb.. but is that the same thing

Ok this pc at school is so slow so i cant find the person who wrote the mark scheme thing.
But for the labelling of the organelles I put plasma membrane not cell surface membrane.
This may sound dumb.. but is that the same thing

What was the one about the label on that graph, was it tidal volume or vital capacity? because it had the arrow on the longest part of the stroke so i assumed it was vital capacity?

Fingers crossed Cardiff for Optometry.
My course is quite rare (Brownie points if youve heard of it) so if you do get a B it doesnt matter as much as say, medicine.
ummm. I'm doing both modules next month so I havent really sat a proper paper as of yet. just a mock I barely revised for and got a B. But, thats because it had loads of science in it.
Photosynthesis and Respiration are such big chapters. but you go over it so much you really understand it. Which is a big different from just knowing it for the exam which is nice.
The jump from GCSE to AS isnt as big to AS to A Level though.