In the process of cell respiration, the vitamins niacin and riboflavin are both necessary for which stage?
A)glycolysis
B)the Krebs cycle
C)the cytochrome (electron) transport system
D)all three stages

Question

Quizplus · Accepted Answer

Niacin and riboflavin are necessary for the Krebs cycle, also known as the citric acid cycle or the tricarboxylic acid cycle. Glycolysis does not require niacin and riboflavin, and while the cytochrome (electron) transport system does use these vitamins, it is not dependent on them as the Krebs cycle is. Therefore, the best choice is B.

In the Process of Cell Respiration, the Vitamins Niacin and Riboflavin