Question

Enzymes RuBP carboxylase-oxygenase and PEP carboxylase are activated by

• A. Zn
• B. Mo
• C. Mn
• D. Mg

Answer 1

The correct option is D Mg

A) Zn activates enzymes like carboxylases.

B) Mo is a component of enzymes like nitrogenase and nitrate reductase.
C) Mn is involved in the splitting of water to liberate oxygen.

D) Mg activates both RuBP carboxylase-oxygenase and PEP carboxylase.

So the correct answer is 'Mg'.