객관식
In glycolysis, ATP molecules are produced directly by which process?
38
views
Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway
Glycolysis 2
객관식
In the glycolytic pathway (conversion of one molecule of glucose to two molecules of pyruvate), how many molecules of NADH are produced per glucose under aerobic conditions?
A
1 NADH
B
0 NADH
C
4 NADH
D
2 NADH
검증된 단계별 안내1
Recall that glycolysis is the metabolic pathway that converts one molecule of glucose into two molecules of pyruvate.
Identify the specific step in glycolysis where NADH is produced: this occurs during the oxidation of glyceraldehyde-3-phosphate to 1,3-bisphosphoglycerate, catalyzed by glyceraldehyde-3-phosphate dehydrogenase.
Note that for each molecule of glucose, glycolysis produces two molecules of glyceraldehyde-3-phosphate, so the NADH-producing step happens twice per glucose molecule.
Calculate the total NADH molecules produced by multiplying the number of NADH molecules produced per glyceraldehyde-3-phosphate oxidation (which is 1) by 2 (because there are two glyceraldehyde-3-phosphate molecules per glucose).
Conclude that the total NADH produced per glucose molecule during glycolysis under aerobic conditions is 2 NADH molecules.
관련 영상
관련 실천
