Question

Which enzyme converts glucose to alcohol?
A.Invertase
B.Lipase
C.Zymase
D.Diastase

Answer 1

Hint:Conversion of glucose to alcohol or ethanol, more specifically and carbon dioxide is called fermentation.

Complete answer:Enzymes are the biocatalysts, that are required in various reactions occurring in a cell every day.
Conversion of glucose to alcohol or alcoholic fermentation, generally involves two steps-
Glycolysis – In the step, one glucose molecule is converted to two pyruvate molecules, producing two net ATP and two NADH.
NADH regeneration – In the second step, NADH passes its electrons to acetaldehyde, regenerating $NAD^+$, hence forming alcohol. So, this process is known as NADH regeneration.
Option C- Zymase - This is a combination of enzymes that catalyzes the breakdown of sugars in alcoholic fermentation.
It is generally obtained from yeasts or any anaerobic organisms. It plays a significant role in the conversion of glucose into alcohol.
So, zymase is the enzyme that converts glucose to ethanol.
Considering other options-
Option A- invertase- This is an enzyme that parts its components to glucose and fructose.
Generally, it is called invert sugar and used as a sweetening agent in bakery industries and brewing factories.
Option B- lipase- This is a pancreatic protein that helps to digest animal fats.
Option D- diastase- This is a group of enzymes that catalyzes the breaking down of starch into maltose.
So, option C) Zymase, is correct.

Note: Zymase enzyme generally converts glucose or fructose into alcohol and carbon dioxide. Zymase was found by Buchner in the year 1987 when he prepared a yeast and sugar solution mixture. The term zymase was coined by Buchner.
Zymase enzyme is generally used in brewing and beer industries for obtaining alcohol.
Zymase is used to prepare different types of alcohols and wine as well as beers. They have a huge industrial use in such cases.