Question

Assertion: The urea cycle spans two cellular compartments of the liver cell.
Reason: The beginning steps in the cycle take place in the mitochondrial matrix and the rest of the steps take place in the cytosol.

• A. Both the assertion and reason are true and the reason is the correct explanation for the assertion
• B. Both the assertion and reason are true but the reason is not the correct explanation for the assertion
• C. Assertion is true but the reason is false
• D. Reason is true but the assertion is false

Answer 1

The correct option is A Both the assertion and reason are true and the reason is the correct explanation for the assertion

The urea cycle is a series of five reactions catalyzed by several key enzymes. The first two steps in the cycle take place in the mitochondrial matrix and the rest of the steps take place in the cytosol. Thus the urea cycle spans two cellular compartments of the liver cell.