Respiration in Plants

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Answer explanation

Thoupure fats or proteins cannot be directly used as substrates, they can enter as intermediary substrates of glycolysis and the Krebs’ Cycle. Proteins and fats have to undergo a series of chemical reactions to form simple compound and then only they can enter Krebs Cycle and help to produce energy which takes a lot of time. Due to these reasons pure proteins and fats are not used as respiratory substance.

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