Question

Enzyme pair common to both EMP and $C_3$ cycle is

• A. Aldolase and enolase
• B. Aldolase and triose phosphate isomerase
• C. Phosphoglyceromutase and triose phosphate isomerase
• D. Cytochrome oxidase and enolase

Answer 1

The correct option is B Aldolase and triose phosphate isomerase

In the EMP pathway or glycolysis, a 6-carbon fructose 1,6- biphosphate is formed which is acted upon by aldolase and phosphotriose isomerase to form 3-PGA and DHAP in dynamic equilibrium. This same pair of an enzyme is also employed in the C3 cycle in which a 6-carbon intermediate is decayed by it to form two molecules of 3-PGA.

So the answer is 'Aldolase and triose phosphate isomerase'.