Suppose the interior of the thylakoids of isolated chloroplasts were made acidic and then transferred in the dark to a pH 8 solu
tion. What would be likely to happen? A. The isolated chloroplasts will make ATP
B. The Calvin cycle will be activated
C. Cyclic photophosphorylation will occur
D. Only A and B will occur
E. A, B and C will occur I know the answer is A but why not B or C as well
Answer: (A) The isolated chloroplasts will make ATP
Explanation:
The Thylakoid will receive hydrogen from the acid which is pumped across the thylakoid membrane, and the electrochemical proton synthesis of ATP begins in the stroma. Once the chloroplast has been transferred to the dark, high-energy electrons are loaded together with (H+) onto NADP+, converting it to NADPH.
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