OCR Biology F211 (cells, exchange and transport) - 11th Jan 2012
Biology exam discussion - share revision tips in preparation for GCSE, A Level and other biology exams and discuss how they went afterwards.
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Re: OCR Biology F211 (cells, exchange and transport) - 11th Jan 2012(Original post by 079)
I LOVE f214!!! I got an A first time round coz I just loved it & had fun revising, I actually dislike f211, I had to resit a few times to get the A...lol
I hate nerves
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Re: OCR Biology F211 (cells, exchange and transport) - 11th Jan 2012Okay(Original post by 079)
well yeah its important you understand the whole arteriole and venous end thing
no no its osmosizes :P
Osmosis: When water will osmosize often referred to as Osmosization :L -
Re: OCR Biology F211 (cells, exchange and transport) - 11th Jan 2012dont try to memorise too much, as long as you understand the concept then it will become 100000 times easier to learn key words etc(Original post by otrivine)
hahaha im actually reading the book 3 times so that my brain is the book!! and im going crazy with so much information and especially unit 2 is a chaos so many topics in one unit! by the way 079 can i ask how do you measure oxygen uptake in a spirometer cause i read the book it says about this soda lime absorbing co2 and the oxygen left in the chamber is used to calculate the oxygen uptake? may thanks
Oxygen Uptake:
The soda lime absorbs Carbon dioxide.
Volume of carbon dioxide absorbed by soda lime = volume of oxygen used up
so to measure it you look at the difference between two points on the curve and divide by the time (it gives an example on p. 51) -
Re: OCR Biology F211 (cells, exchange and transport) - 11th Jan 2012and past tense would be osmosized(Original post by ieatcheeseyo)
Okay
Osmosis: When water will osmosize often referred to as Osmosization :L
we need to stop now loll -
Re: OCR Biology F211 (cells, exchange and transport) - 11th Jan 2012Lymph is tissue fluid that has drained into lymphatic vessels(Original post by otrivine)
hi can someone tell me how lymph is formed? -
Re: OCR Biology F211 (cells, exchange and transport) - 11th Jan 2012
can someone tell me what is the role of the endodermis is to getting water into the xylem or is to transport minerals b active transport from the cortex into the xylem which will decrease the water potentilal? does it do 2 functions many thanks
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Re: OCR Biology F211 (cells, exchange and transport) - 11th Jan 2012Thanks so much for this!(Original post by GabGirl)
Okay i worked it out .... aaah the handy paperclip icon ... who would have thought ( i apologize for being such a computer retard)
Hope the notes are useful . They're massive because i printed them out and stuck them on my wall and then highlighted stuff
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Re: OCR Biology F211 (cells, exchange and transport) - 11th Jan 2012Get the checklist from OCR...(Original post by trrr)
how many past papers do u have to go through to stand a chance of passing this exam. Im revising from mark schemes and im not revising from my revision notes.
That will tell you EVERYTHING you nned to know for the exam...
Whatever way you revise; tick off each bllet point once you know how to answer/complete it -
Re: OCR Biology F211 (cells, exchange and transport) - 11th Jan 2012send me the link of the checklist plz.(Original post by ieatcheeseyo)
Get the checklist from OCR...
That will tell you EVERYTHING you nned to know for the exam...
Whatever way you revise; tick off each bllet point once you know how to answer/complete it -
Re: OCR Biology F211 (cells, exchange and transport) - 11th Jan 2012Forgot to quote, it's up there ^ :L(Original post by trrr)
send me the link of the checklist plz. -
Re: OCR Biology F211 (cells, exchange and transport) - 11th Jan 2012The problem with revising from mark schemes is the stuff that has never come up in past exams is most likely to come up in this exam. Whilst looking at mark schemes is good for improving exam technique I don’t think it’s the best way to revise the content.(Original post by trrr)
how many past papers do u have to go through to stand a chance of passing this exam. Im revising from mark schemes and im not revising from my revision notes.
If it works for you though carry on with it, just make sure you don’t miss things. And I can’t possibly say how many you need to go through to pass, it depends entirely on the individual. -
Re: OCR Biology F211 (cells, exchange and transport) - 11th Jan 2012
Getting confused with chromsomes/chromatids/meoisis.
I know the definitions of meiosis/mitosis, but I've seen that many diagrams I'm confused as to what things are.
Like, the cross shape you see, is that ONE chromosome? Or is 1 strand ONE chromosome?
And what happens in meiosis?
Thank you so much guys! -
Re: OCR Biology F211 (cells, exchange and transport) - 11th Jan 2012Well I know for sure that in resolution you HAVE to mention "detail", so I would say: The degree to which it is possible to distinguish the detail between two near points.(Original post by ieatcheeseyo)
Are these suitable or too short?
1.1.1 b
Magnification: the degree to which the size of the image is larger the object itself.
Resolution: the degree to which it is possible to distinguish between two points.
Mark scheme says this (for 2 marks):
- ability to see (two) objects (that are close together) as separate objects / AW ;
- see detail ;
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ACCEPT ability to distinguish two objects
IGNORE clarity / clear
