Question

Assertion: Manganese is an activation of enzyme nitrite reductase
Reason : Manganese deficient cells prefer ammonia over nitrate
A. Both Assertion and Reason are true and Reason is the correct explanation of assertion
B. Both assertion and Reason are true, but reason is not the correct explanation of assertion
C. Assertion is true, but reason is false
D. Assertion is false, but reason is true

Answer 1

Correct Answer - A
Manganese plays an important role in nitrate reduction. Manganese acts as an activator for the enzymes nitrate reductase and hydroxlamine reductase. The preference of ammonia over nitrate as a nitrogen source by the manganese-ddeficient cells supports the above mentioned analysis of the role of manganese.