Question

Match Column–I with Column–II and select the correct option from the codes given below:

Column–I (Activator element)	Column–II (Enzyme)
A	Mg${}^{2+}$	(i)	Nitrate reductase
B	Zn${}^{2+}$	(ii)	RuBiSCO, PEPCase
C	Mo	(iii)	Alcohol dehydrogenase

• A. A–(ii), B–(iii), C–(i)
• B. A–(iii), B–(ii), C–(i)
• C. A–(i), B–(iii), C–(ii)
• D. A–(ii), B–(i), C–(iii)

Answer 1

The correct option is A A–(ii), B–(iii), C–(i)

Micronutrients are termed as trace elements as they are needed in very less quantities. It include iron, copper, molybdenum, zinc, boron, chlorine, nickel.
Certain elements that activates or inhibits the enzyme synthesis includes Mg${}^{2+}$ which activates enzymes ( ribulose biphosphate carboxylase-oxygenase and phosphoenol pyruvate carboxylase) for photosynthetic carbon fixation. Zinc activates alcohol dehydrogenase and Mo helps in nitrogen metabolism. So, the correct option is “a”.