When a cell with the pentose phosphate pathway has need for more pentose phosphates, but no additional NADPH:

Question

Quizplus · Accepted Answer

When a cell with the pentose phosphate pathway has a need for more pentose phosphates but no additional NADPH, the non-oxidative enzymes of the pentose phosphate pathway will produce pentose phosphates from fructose-6-phosphate and glyceraldehyde-3-phosphate. This allows the cell to meet its need for pentose phosphates without consuming NADPH, which is required for other cellular processes. The activation of glucose-6-phosphate dehydrogenase (choice A) would actually consume more NADPH, exacerbating the problem. Choice B and D are incorrect because the oxidative enzymes of the pentose phosphate pathway would also consume NADPH, which the cell does not have in excess. E is incorrect because there is a viable solution to the problem, as stated in choice C.

When a Cell with the Pentose Phosphate Pathway Has Need