Amino Acid Catabolism: Carbon Atoms

25. Protein and Amino Acid Metabolism / Amino Acid Catabolism: Carbon Atoms / Problem 1

Problem 1

Which of the following molecules in the citric acid cycle do the carbon skeletons of glucogenic amino acids enter?
(i) α-ketoglutarate
(ii) succinyl-CoA,
(iii) oxaloacetate
(iv) fumarate

Only (i)

(i) and (iii)

(ii) and (iv)

(i), (ii), (iii), and (iv)

Which of the following molecules in the citric acid cycle do the carbon skeletons of glucogenic amino acids enter?(i) α-ketoglutarate(ii) succinyl-CoA,(iii) oxaloacetate(iv) fumarate