After the reaction with Rubisco, the major difference between the Calvin Cycle and gluconeogenesis in liver is the following reaction:
A) The reduction of 1,3 bis phosphoglyceric acid uses NADPH instead of NADH
B) The formation of 1,3 bis phosphoglyceric acid from 3-phosphoglyceric acid uses GTP instead of ATP.
C) Phosphatases are not required in plants.
D) The reduction of 1,3 bis phosphoglyceric acid uses NADH instead of NADPH
E) More than one of these reactions is substantially different in plants compared to liver.

Question

Quizplus · Accepted Answer

The Calvin Cycle uses NADPH for the reduction of 1,3-bisphosphoglyceric acid to glyceraldehyde-3-phosphate, whereas gluconeogenesis in the liver uses NADH for similar reduction steps. This reflects the different metabolic contexts and cofactor availabilities in chloroplasts versus mitochondria/cytosol.

After the Reaction with Rubisco, the Major Difference Between the Calvin