Textbook Question
List the energy yield in ATP molecules for each of the following:
c. 2 Pyruvate → 2 acetyl CoA + 2 CO2
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22. Carbohydrate Metabolism
Total Energy from Glucose
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The total equivalent ATP yield from: 2 pyruvate → 2 Acetyl CoA + 2 CO2.
A
0 ATP
B
2 ATP
C
5 ATP
D
10 ATP
Verified step by step guidance1
Understand that the conversion of pyruvate to Acetyl CoA is part of cellular respiration, specifically the link reaction between glycolysis and the citric acid cycle.
Each pyruvate molecule is converted into one Acetyl CoA and one CO2. During this conversion, NAD+ is reduced to NADH.
For each pyruvate, one NADH is produced. Since there are 2 pyruvate molecules, a total of 2 NADH molecules are generated.
Each NADH molecule can be used in the electron transport chain to produce ATP. Typically, one NADH can yield approximately 2.5 ATP.
Calculate the total ATP yield by multiplying the number of NADH molecules (2) by the ATP yield per NADH (2.5), resulting in a total ATP yield from the conversion of 2 pyruvate to 2 Acetyl CoA.
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