Question

Starting with citrate, which of the following combinations of products would result from three acetyl CoA molecules entering the citric acid cycle (see Figure 9.2)?
A) 1 ATP, 2 CO₂, 3 NADH, and 1 FADH₂
B) 2 ATP, 2 CO₂, 3 NADH, and 3 FADH₂
C) 3 ATP, 3 CO₂, 3 NADH, and 3 FADH₂
D) 3 ATP, 6 CO₂, 9 NADH, and 3 FADH₂
E) 38 ATP, 6 CO₂, 3 NADH, and 12 FADH₂

Answer 1

Hello there.

Starting with citrate, which of the following combinations of products would result from three acetyl CoA molecules entering the citric acid cycle (see Figure 9.2)? 

Option D.

Answer 2

The balanced reaction for the citric acid cycle provides the following stoichiometric ratio:
1 acetyl CoA : 1 ATP: 2 CO2 : 3 NADH : FADH2
If we start with 3 molecules of acetyl CoA, then the products would be
D) 3 ATP, 6 CO₂, 9 NADH, and 3 FADH₂