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) 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 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 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 Skip to navigation page 12 of 12

Answer 1

The correct products of the Krebs cycle after 1 molecule of glucose goes through it are:

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

This reflects the total output of two cycles of the Krebs cycle (since one glucose molecule is split into two pyruvate molecules, each of which enters the Krebs cycle). Each turn of the cycle produces 3 NADH, 1 FADH2, 1 ATP (or GTP), and releases 2 CO2. So for two cycles, you get:

• 6 NADH (3 per cycle × 2),
• 2 ATP (1 per cycle × 2),
• 4 CO2 (2 per cycle × 2),
• 2 FADH2 (1 per cycle × 2).

So, the first option is the correct answer.