Question

Match the following.

Column I	Column II
(1) $Mg^{2 +}$	(i) Chlorophyll
(2) P	(ii) ATP
(3) Zn	(iii) Alcohol dehydrogenase
(4) Mo	(iv) Nitrogenase

• A. (1) - (ii), (2) - (i), (3) - (iii), (4) - (iv)
• B. (1) - (i), (2) - (ii), (3) - (iii), (4) - (iv)
• C. (1) - (iv), (2) - (i), (3) - (ii), (4) - (iii)
• D. (1) - (iv), (2) - (iii), (3) - (i), (4) - (i)

Answer 1

Answer: (B)

Chlorophyll is the green colour pigment found in the photosynthetic organisms. This pigment is responsible for absorbing the light energy and convert into chemical energy to be used in making glucose. The general structure of chlorophyll consists of a chlorin ring with a $Mg^{2 +}$ ion surrounded by four nitrogen atoms in the central part of the ring. The ring is attached to several side chains and long hydrocarbon tail. Adenosine triphosphate a.k.a. ATP is the energy molecule required for regulating various metabolic processes. ATP is a nucleoside triphosphate having adenine as nitrogen base, ribose sugar and three phosphate groups. These phosphates have phosphorous as the core element.
Alcohol dehydrogenase is a type of enzyme that facilitates interconversion between alcohol and aldehydes or ketones by reducing NAD to NADH. These enzymes are known to contain Zn which plays a structural role and significant for the stability of the protein.
Nitrogenase enzymes are responsible for converting nitrogen to ammonia by reduction. It contains Molybdenum required for the proper activity of the enzyme in catalyzing the reaction.