Question

Given below are some reactions and the enzymes involved.
Identify the correct pairs.

Column I	Column II
1. $Fructose1,6diphosphate\to 3PGAL+DHAP$	a. Enolase
2. $Citrate\to Cis-aconitate$	b. Thiokinase
3. $SuccinylCo.A\to succinate$	c. Aconitase
4. $2PGA\to PEPA$	d. Aldolase

• A. $1-d,2-c,3-b,4-a$
• B. $1-a,2-b,3-c,4-d$
• C. $1-b,2-a,3-d,4-c$
• D. $1-c,2-d,3-a,4-b$

Answer 1

The correct option is A $1-d,2-c,3-b,4-a$

Aldolase also known as fructose - bisphosphate aldolase B plays a key role in both glycolysis and gluconeogenesis. The fructose 1, 6- bisphosphate aldolase enzyme catalyzes the reversible cleavage of fructose 1, 6-bisphosphate into glyceraldehyde 3-phosphate and dihydroxyacetone phosphate (DHAP).

Aconitase is an iron-sulphur protein that catalyses the interconversion of citrate and isocitrate, via a cis - aconitate intermediate, functioning in both the tricarboxylic acid (TCA) and glyoxylate cycles.

Succinyl - coenzyme A is converted into succinate through the hydrolytic release of coenzyme A by succinyl - CoA synthetase (succinate thiokinase).

2- PGA loses one molecule of water and is converted into phosphoenolpyruvic acid (PEPA) with the involvement of enzyme enolases.

Thus, the correct answer is option A.