Practice question
Question
The following statements are related to the regulation of the enzyme nitrate reductase. A. Light, carbohydrate levels, and other environmental factors activate the enzymes by dephosphorylation. B. Light, carbohydrate levels, and other environmental factors inactivate the enzymes by dephosphorylation. C. Darkness and Mg²⁺inactivate the enzyme by phosphorylation. D. Darkness and Mg²⁺activate the enzyme by dephosphorylation. Choose the correct answer from the options given below:
Explanation
the following statements are related to the operates via A and C Only represents established outcome. functional assays validates option A. Other options propose substrate or regulatory direction, inconsistent with published kinetics and mutant phenotypes.
Discussion
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