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A2 Biology OCR June 2015 Revision Thread

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Reply 2020
Avatar for chyns
chyns
Original post by baymax96
In the Calvin cycle, is GP reduced by reduced nadp and phosphorylated by ATP?

yes it is
Original post by baymax96
In the Calvin cycle, is GP reduced by reduced nadp and phosphorylated by ATP?


Technically , GP is oxidised and NADP is reduced
Original post by KingPiccy
Technically , GP is oxidised and NADP is reduced


Is it GP or TP that is phosphorylated? I can't remember which molecule gets Pi
Original post by KingPiccy
Technically , GP is oxidised and NADP is reduced


No, reduced NADP isn't reduced again in the Calvin Cycle. The point is you regenerate NADP so then NADP goes back to the light dependent stage.
Hence GP is reduced to TP, hence reduced NADP is simultaneously oxidised, to NADP.


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Reply 2024
Avatar for chyns
chyns
Original post by KingPiccy
Technically , GP is oxidised and NADP is reduced

I don't get that because reduced NADP is reoxidised to NADP so therefore GP is reduced right? or am i wrong :s
Reply 2025
Avatar for chyns
chyns
Original post by Hilton184
No, reduced NADP isn't reduced again in the Calvin Cycle. The point is you regenerate NADP so then NADP goes back to the light dependent stage.
Hence GP is reduced to TP, hence reduced NADP is simultaneously oxidised, to NADP.




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yeah that's what I thought too :smile:
Original post by Hilton184
No, reduced NADP isn't reduced again in the Calvin Cycle. The point is you regenerate NADP so then NADP goes back to the light dependent stage.
Hence GP is reduced to TP, hence reduced NADP is simultaneously oxidised, to NADP.


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Oh i thought you made reduced NADPH in calvin but it turns out NADP is made, my bad.
Reply 2027
Avatar for chyns
chyns
any tips to make prevent falling asleep before the exam
Original post by ChoccyPhilly
Is it GP or TP that is phosphorylated? I can't remember which molecule gets Pi


Both
Reply 2029
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chyns
Original post by KingPiccy
Oh i thought you made reduced NADPH in calvin but it turns out NADP is made, my bad.



Btw its Reduced NADP or NADPH :smile:
Original post by chyns
Can someone answer this pleaseeeee.


@t_sparrow
There is nothing on respirometers in the spec and there havent been any questions on it. They shouldnt ask it without giving background info.

EDIT: Dont know if someone answered already, didnt refresh the page lol
Reply 2031
Avatar for chyns
chyns
Original post by Faithams
@t_sparrow
There is nothing on respirometers in the spec and there havent been any questions on it. They shouldnt ask it without giving background info.

EDIT: Dont know if someone answered already, didnt refresh the page lol
you know what ocr is like they come up with random stuff sometimes but thank you haha, I actually came across it in a unit4 pack so not sure if it was an old question
Reply 2032
Avatar for WBN
WBN
is the role of the distal conveluted tubule just to adjust urine levels before entering the collecting duct? because compared to the PCT it doesn't seem that important
has everyone memorised the structure of NAD?
Reply 2034
Avatar for chyns
chyns
Original post by WBN
is the role of the distal conveluted tubule just to adjust urine levels before entering the collecting duct? because compared to the PCT it doesn't seem that important


I think it does this by reabsorbing water
Original post by RichBitch
I actually know some stuff in F214 *high five*


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F214:whip:
Original post by BioAgent
has everyone memorised the structure of NAD?


nope :frown:
Original post by bakedbeans247
nope :frown:


I dont think they will ask us anyway never seen it before.
Original post by chyns
thanks!!! gd luck for tomorrow


no problem! and you too
chill man if its hard then boundaries will be low if its easy the opposite will happen. Just do your best. No one can predict.

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