The Krebs cycle forms many products. Which option lists the correct products of the Krebs cycle after 1 molecule of glucose goes through it?(1 point)

Question

Responses

6 NADH, 2 ATP, 4 CO2, and 2 FADH2
6 N A D H , 2 A T P , 4 C O sub 2 , and 2 F A D H sub 2

net 1 NADH, 1 ATP, 2 CO2, 1 FADH2
net 1 N A D H , 1 A T P , 2 C O sub 2 , 1 F A D H sub 2

net 2 NAD+, 2 ATP, 4 CO2, 2 FADH
net 2 N A D plus , 2 A T P , 4 C O sub 2 , 2 F A D H

net 4 NADH, 4 ATP, 8 CO2, 4 FADH2
net 4 N A D H , 4 A T P , 8 C O sub 2 , 4 F A D H sub 2

Answer 1

The correct option for the products of the Krebs cycle after one molecule of glucose goes through it is:

6 NADH, 2 ATP, 4 CO2, and 2 FADH2

When one molecule of glucose is metabolized, it goes through glycolysis, producing 2 molecules of pyruvate, which then enter the Krebs cycle. Each pyruvate produces the following from its conversion through the Krebs cycle:

• 3 NADH
• 1 FADH2
• 1 ATP (or GTP)
• 2 CO2

Since each glucose molecule produces 2 pyruvate molecules, the totals for the Krebs cycle from one glucose molecule are:

• 6 NADH (3 from each of the 2 pyruvates)
• 2 ATP (or GTP) (1 from each of the 2 pyruvates)
• 4 CO2 (2 from each of the 2 pyruvates)
• 2 FADH2 (1 from each of the 2 pyruvates)

Therefore, the total products after one cycle for one molecule of glucose is 6 NADH, 2 ATP, 4 CO2, and 2 FADH2.