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A2 Biology OCR June 2015 Revision Thread

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photosynthesis experiment?
Original post by skywalker12
Wher does oxidaive phosphorylation occur?


Cristae of mitochondria.
Original post by skywalker12
Wher does oxidaive phosphorylation occur?


Inner mitochondrial membrane
Is it ok to write in bullet points whenever possible in the exam (except for QWC questions)? It would save a lot of time if I could, it takes me ages to write full sentences!
Original post by BioAgent
photosynthesis experiment?


I really hope they don't ask for expirements. they take too long to learn lol.
Ok, so, in the OCR textbook it gives deamination as:
amino acids --> Ammonia + Organic acids
But I've seen it elsewhere as:
Amino Acids + Oxygen --> Ammonia + Keto acids

I know Keto acids are organic, but is the oxygen correct?
Has anyone got the correct equation?
Thanks :biggrin:
Original post by TheNoobishKnight
I really hope they don't ask for expirements. they take too long to learn lol.


I have a feeling its gonna come up :frown:
Original post by LMottram
Ok, so, in the OCR textbook it gives deamination as:
amino acids --> Ammonia + Organic acids
But I've seen it elsewhere as:
Amino Acids + Oxygen --> Ammonia + Keto acids

I know Keto acids are organic, but is the oxygen correct?
Has anyone got the correct equation?
Thanks :biggrin:


actually the textbook also says Amino Acids + Oxygen --> Ammonia + Keto acids
Hey guys, for all the confusion about the total amount of products for respiration etc, my teacher gave me this pack of notes like 2 days ago and it's genuinely my bible haha! It's so helpful so here's what it says for that topic image.jpg
ascending and descending limb? what do i need to know about them
can someone also show me the their notes of the structure of a cholorplast? with all freatures labelled

thanks x
so are we all just hoping the photosynthesis experiment just doesnt show up?
Original post by Maham88
actually the textbook also says Amino Acids + Oxygen --> Ammonia + Keto acids


My CGP ocr textbook doesn't :bawling:
Thank you for clarifying! I bet it doesn't come up now I know :biggrin:
Reply 2133
Avatar for tewas
tewas
2
do we need to know examples of endo/ectotherms?
Original post by BioAgent
so are we all just hoping the photosynthesis experiment just doesnt show up?


yes but there is is a chance of it coming up
Reply 2135
Avatar for e16
e16
4
how does pyruvate enter the mitochondrial matrix? is it just by diffusion?
Original post by LMottram
My CGP ocr textbook doesn't :bawling:
Thank you for clarifying! I bet it doesn't come up now I know :biggrin:

lol you never know
Original post by Maham88
yes but there is is a chance of it coming up


LOL ahh im screwed.
Original post by e16
how does pyruvate enter the mitochondrial matrix? is it just by diffusion?


active transport using ATP
Original post by BioAgent
LOL ahh im screwed.

Same here, just read the experiment in the book again and again and write it down to memorise it

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