Urea cycle linked to kreb's cycle by?: (A) Fumarate, (B) Oxaloacetate, (C) Ornithine, (D) Citrullin
Answer is A. ANSWER: (A) FumarateREF: Harper's illustrated biochemistry 27th ed p. 246-49Arginosuccinate is converted to arginine at this step fumarate is released. At this step urea cycle cycle is linked with TCA cycle.