Question

Match the Column-I and Column-II:

Column-I	Column-II
(i) $M{o}^{+2}$	(a) Carboxylases
(ii) $M{g}^{+2}$	(b) Nitrogenase
(iii) $Z{n}^{+2}$	(c) Catalase
(iv) $F{e}^{+3}$	(d) Pyruvate dehydrogenase

• A. $\left(i\right)\to \left(b\right),\left(ii\right)\to \left(d\right),\left(iii\right)\to \left(c\right),\left(iv\right)\to \left(a\right)$
• B. $\left(i\right)\to \left(b\right),\left(ii\right)\to \left(a\right),\left(iii\right)\to \left(d\right),\left(iv\right)\to \left(c\right)$
• C. $\left(i\right)\to \left(d\right),\left(ii\right)\to \left(b\right),\left(iii\right)\to \left(a\right),\left(iv\right)\to \left(c\right)$
• D. $\left(i\right)\to \left(b\right),\left(ii\right)\to \left(d\right),\left(iii\right)\to \left(a\right),\left(iv\right)\to \left(c\right)$

Answer 1

The correct option is D $\left(i\right)\to \left(b\right),\left(ii\right)\to \left(d\right),\left(iii\right)\to \left(a\right),\left(iv\right)\to \left(c\right)$

Molybdenum: It is a component of several enzymes, including nitrogenase and nitrate reductase both of which participate in nitrogen metabolism.

Magnesium: It activates the enzymes of respiration and photosynthesis. In respiration, it activates pyruvate dehydrogenase.

Zinc: It activates various enzymes, especially carboxylases.

Iron: It activates catalase enzyme. It is also an important constituent of proteins involved in the transfer of electrons like ferredoxin and cytochromes.