Question

Zymase catalyst is present in Yeast. Zymase decomposes to ethanol and carbon dioxide by decomposition of

• A. Glucose
• B. Starch
• C. Fructose
• D. Sucrose

Hint:

Remember the enzyme sequence: Invertase converts Sucrose to Glucose/Fructose. Then Zymase takes that Glucose and turns it into Alcohol. Zymase is the "Finisher" enzyme in the ethanol process!

Answer 1

The Correct Option is A

Concept: Fermentation is a biochemical process where enzymes act as catalysts to convert sugars into simpler compounds like alcohols and gases.

Step 1: Identify the role of Zymase.
Zymase is an enzyme complex found in yeast that catalyzes the fermentation of sugar into ethanol and carbon dioxide.

Step 2: Identify the specific substrate.
While yeast can break down complex sugars like sucrose (using the enzyme invertase), the specific step catalyzed by Zymase is the direct conversion of simple hexose sugars—primarily Glucose—into alcohol. \[ C_{6}H_{12}O_{6} \xrightarrow{\text{Zymase}} 2C_{2}H_{5}OH + 2CO_{2} \]