Choose the incorrect statement.

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Energy released by oxidation in respiration is used directly in various physiological processes.

ATP act as the energy currency of the cell.

Carbon skeleton produced during respiration can be used as precursor for biosynthesis of other molecules.

Plants require oxygen for respiration.

answer is A.

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Detailed Solution

During oxidation within a cell, all the energy contained in respiratory substrates is not released free into the cell, or in a single step. It is released in a series of slow step-wise reactions controlled by enzymes, and it is trapped as chemical energy in the form of ATP. Hence, it is important to understand that the energy released by oxidation in respiration is not (or rather cannot be) used directly but is used to synthesise ATP, which is broken down whenever (and wherever) energy needs to be utilised.

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