Question

How many molecules of reduced coenzymes are produced inside mitochondria during complete oxidation of one glucose?

• A. Five - 4NADH + 1 ${\mathrm{FADH}}_2$
• B. Twelve -10 NADH + 2 ${\mathrm{FADH}}_2$
• C. Ten -8 NADH + 2 ${\mathrm{FADH}}_2$
• D. Four -3 NADH + 1 ${\mathrm{FADH}}_2$

Answer 1

The correct option is C Ten -8 NADH + 2 ${\mathrm{FADH}}_2$

1 molecule of glucose yields 2 NADH (reduced nicotinamide adenine dinucleotide), 2 ATP and 2 pyruvate while undergoing glycolysis (breakdown of glucose). The 2 molecules of pyruvate are completely degraded in Krebs cycle to form 2 ATP, 8 NADH (reduced nicotinamide adenine dinucleotide) and 2 ${\mathrm{FADH}}_2$.