Energy equivalent of a NADH is which of the following numbers of ATP molecules ?

Options

A. 2
B. 3
C. 38
D. 36

Answer

To determine the energy equivalent of NADH in terms of ATP molecules, we can follow these steps:

### Step-by-Step Solution:

1. **Understand NADH**: NADH stands for Nicotinamide Adenine Dinucleotide (reduced form). It is a key electron carrier in cellular respiration, particularly in the processes of glycolysis and the Krebs cycle.

2. **Role of NADH in Cellular Respiration**: During cellular respiration, NADH is produced as glucose is broken down. It carries electrons to the electron transport chain, where its energy is used to produce ATP.

3. **ATP Production from NADH**: Each molecule of NADH can be used to generate ATP through oxidative phosphorylation. In aerobic respiration, one NADH typically yields about 2.5 to 3 ATP molecules, depending on the specific conditions and the efficiency of the electron transport chain.

4. **Select the Correct Answer**: Based on standard biochemical knowledge, the energy equivalent of one NADH is generally accepted to be 3 ATP molecules in the context of aerobic respiration.

5. **Conclusion**: Therefore, the energy equivalent of NADH is 3 ATP molecules.

### Final Answer:
The energy equivalent of a NADH is 3 ATP molecules.