Essential Biochemistry - Protein Metabolism (Section 4 - No. 44)
What is the role of fumarate in the urea cycle?
It is a precursor for ornithine synthesis.
It is a source of ammonia for the cycle.
It connects the urea cycle to the citric acid cycle.
It is a waste product.
Explanation
Fumarate is produced in the urea cycle and also enters the citric acid cycle, linking the two pathways.
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