MCQ – 73195

In Kreb’s cycle and Urea cycle, the linking amino acid is:

Correct Answer � A Explanation

– Fumarate is formed when arginosuccinate is split into arginine & fumarate by arginosuccinate lyase during the urea cycle.
– Fumarate then enters the Krebs cycle, converted to malate via the enzyme fumarase.
– Thus, fumarate links the urea and Krebs cycles.