Question

What happens to all the energy released during respiration?

• A. It gets released inside the cell
• B. It gets stored in the form of high energy chemical intermediates i.e., $\text{ATP, NADH}$ and $FAD{H}_2$
• C. It gets dissipated outside the cell
• D. Fate of released energy cannot be determined

Answer 1

The correct option is B It gets stored in the form of high energy chemical intermediates i.e., $\text{ATP, NADH}$ and $FAD{H}_2$

During the break down of respiratory substrates within a cell, all the contained energy is not released free into the cell, or in a single step. Rather, it is released in a series of slow, stepwise, enzyme controlled reactions, and it is trapped as chemical energy in the form of $ATP,NADH$ and $FAD{H}_2$.