Proteins act as respiratory substrates only w | vedclass

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(C) In cellular respiration,carbohydrates are the preferred respiratory substrates. When carbohydrates are exhausted,fats are utilized as the next sou

Vedclass · Accepted Answer

Both $1$ and $2$ are absent

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(C) In cellular respiration,carbohydrates are the preferred respiratory substrates. When carbohydrates are exhausted,fats are utilized as the next source of energy. Proteins are used as respiratory substrates only when both carbohydrates and fats are absent in the cell. This is because proteins are primarily required for structural and functional roles in the body,and their breakdown for energy is a last resort.

Proteins act as respiratory substrates only when:

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