Question

why pure proteins and fats are not used in respratory substrates? i' ll feel good if i ll get the answr earliest

Answer 1

Both fats and proteins have to under undergo series of reactions to form simple compounds and which are all converted into a compound(acetyl coenzyme) that can enter Krebs’ cycle. On the other hand glucose can act directly as a respiratory substrate as it is easy to oxidise and abundantly present in a body.