Assertion :Magnesium is an activator of enzyme nitrite reductase Reason: Magnesium deficient cells prefer ammonia over nitrate

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

Assertion:

Magnesium is an activator of enzyme nitrite reductase.
Reason:
Magnesium deficient cells prefer ammonia over nitrate.
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
Magnesium plays an important role in nitrate reduction. Manganese acts as an activator for the enzymes nitrite reductase and hydroxylamine reductase. The preference of ammonia over nitrate as a nitrogen source by the manganese-deficient cells supports the above mentioned analysis of the role of manganese.

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