Which of the metabolites is common to respira | vedclass

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(B) The correct answer is $B$. Carbohydrates are typically converted into glucose before being used for respiration. Fats are first broken down into g

Vedclass · Accepted Answer

Acetyl $CoA$

Vedclass · Answer

(B) The correct answer is $B$. Carbohydrates are typically converted into glucose before being used for respiration. Fats are first broken down into glycerol and fatty acids. Fatty acids are degraded into acetyl $CoA$ to enter the respiratory pathway,while glycerol is converted into $3$-phosphoglyceraldehyde $(PGAL)$ before entering. Proteins are broken down by proteases into individual amino acids. After deamination,these amino acids enter the respiratory pathway at various stages,such as pyruvate,acetyl $CoA$,or intermediates of the Krebs cycle. Thus,acetyl $CoA$ acts as a common metabolic intermediate for the breakdown of all three major respiratory substrates: carbohydrates,proteins,and fats.

Which of the metabolites is common to respiration-mediated breakdown of fats,carbohydrates,and proteins?

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