Question

Oxidation of one \(\text{NADH}+\text{H}^{+}\) leads to production of _________ ATP molecules.

• A. one
• B. two
• C. three
• D. four

Hint:

As per the textbook value, one NADH gives 3 ATP through the electron transport chain.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept
\(\text{NADH}+\text{H}^{+}\) passes its electrons to the electron transport chain at complex I.

Step 2: ATP yield
The electron flow down to oxygen pumps enough protons to make three ATP molecules by oxidative phosphorylation, by the textbook value.
In comparison \(\text{FADH}_{2}\) enters at complex II and gives only two ATP.

Step 3: Conclusion
One NADH gives three ATP.

Final Answer:
Oxidation of one NADH gives three ATP, option (C). \[ \boxed{\text{(C) }\text{three}} \]