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The number of phosphorylations and dephosphorylations in PCR cycle respectively are

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2 and 3

3 and 3

3 and 2

1 and 2

answer is B.

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Detailed Solution

PCR cycle is photosynthetic carbon reduction cycle phosphorylations and dephosphorylations takes place during regeneration of calvin cycle .

Number of phosphorylations -3

( formation of fructose 1,6 bis phosphate , sedoheptulose 1,7 bis phosphate and ribulose 1,5 bis phosphate )

Number of dephosphorylations -2 ( formation of fructose 6 phosphate and formation of sedoheptulose 7 phosphate )

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