$\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6} \xrightarrow{\text { Enzyme B }} 2 \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}+2 \mathrm{CO}_{2}$ In the above reactions, the enzyme $A$ and enzyme $B$ respectively are:

JEE Main · 2021 · 17 Mar 2021 · Shift 2 · Biomolecules

C_{6} H_{12} O_{6} Enzyme B 2 C_{2} H_{5} OH + 2 CO_{2}

In the above reactions, the enzyme

A

and enzyme

B

respectively are:

(A)Invertase and Zymase✓ Correct
(B)Invertase and Amylase
(C)Zymase and Invertase
(D)Amylase and Invertase

Answer: (A)

Solution

The first reaction shows the hydrolysis of sucrose (

C_{12} H_{22} O_{11}

) to glucose and fructose (both

C_{6} H_{12} O_{6}

), catalyzed by invertase. The second reaction is the fermentation of glucose to ethanol and carbon dioxide, catalyzed by zymase. Therefore, enzyme A is invertase and enzyme B is zymase.

JEE Main · 2021 · 17 Mar 2021 · Shift 2 · Single correct option

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