ATP - photosynthesis

[dat_student]

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ATP is only produced in the cyclic path, right?
do we get any ATPs as a result of the non-cyclic electron flow? i think no but one of my books says yes. kaplan doesn't say ATPs are produced in the non-cyclic ....i need a third opinion.

 

[chordata]

It depends on how you look at it. If you are considering both Photosystem I and Photosystem II as part of non-cyclic then yes ATP is generated.

 

[dat_student]

It depends on how you look at it. If you are considering both Photosystem I and Photosystem II as part of non-cyclic then yes ATP is generated.

good point, how would you look at it?

 

[chordata]

I'd consider the non-cyclic cycle to include both photosystems.

 

[dat_student]

I'd consider the non-cyclic cycle to include both photosystems.

thanks so much

 

[luder98]

ATP is only produced in the cyclic path, right?
do we get any ATPs as a result of the non-cyclic electron flow? i think no but one of my books says yes. kaplan doesn't say ATPs are produced in the non-cyclic ....i need a third opinion.

You should read Kaplan again.

 

[dat_student]

You should read Kaplan again.

i was reading a diff kaplan when I asked that question 😉 i just noticed that the DAT version says non-cyclic generates ATP as well. thanks luder. I know that you'll ace the dat.

 

[INFNITE]

for non-cyclic, the electron still goes down the electron transport chain, which drives chemiosmosis. In cyclic, you just have electrons being recycled after it's being powered by Photosystem I instead of it being used for formation of NADPH.