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Question

What happens to all the energy released during respiration?

A
It gets released inside the cell
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B
It gets stored in the form of high energy chemical intermediates i.e., ATP, NADH and FADH2
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C
It gets dissipated outside the cell
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D
Fate of released energy cannot be determined
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Solution

The correct option is B It gets stored in the form of high energy chemical intermediates i.e., ATP, NADH and FADH2
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 FADH2.

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