Question

Which of the following molecules are electron carriers and are capable of producing ATP in the repiratory pathway?

• A. $\text{NADPH}$ and $FAD{H}_2$
• B. $\text{NADH}$ and $FAD{H}_2$
• C. NADPH
• D. None of the above

Answer 1

The correct option is B $\text{NADH}$ and $FAD{H}_2$

The breaking of the $C-C$ bonds of complex compounds within the cells, leading to release of a considerable amount of energy is called respiration.
The energy liberated is stored in the form of ATP. Other than the ATP molecule, $\text{NADH}$ and $FAD{H}_2$ molecules are capable of producing ATP and act as an electron carrier in the respiratory pathway.