Which of the two statements together support that respiratory pathway is an amphibolic pathway ,
(i) Fats breakdown to glycerol and fatty acids, subsequently yields acetyl CoA
(ii) In respiration C-C bonds of complex compounds breakdown through oxidation leading to release of energy
(iii) Acetyl CoA from respiratory pathway is withdrawn for synthesis of fatty acids
(iv) Proteins are degraded by protease to amino acids and enter the respiratory pathway

Options

A. I and II
B. I and IV
C. II and IV
D. I and III

Answer

D

Explanation

(d)Amphibolic pathway is a collective term used for both carabolic and anabolic process.During respiration fats are first. Broken down to glycerol and fatty acids yielding acetyl Co-A.This acetyl Co-A is withdrawn when required and used in fatty acid synthesis.