Institution: Directorate of Nursing Services (DNS) Exam: বিএসসি ইন নার্সিং ভর্তি পরীক্ষা । ২০২২-২০২৩ || নার্সিং(Nursing) ভর্তি পরীক্ষা || 2023
Topic: Biology (জীববিদ্যা), Subject: General Science (সাধারণ বিজ্ঞান)

Best Answer Explained in Below-:

The question asks which enzyme converts glucose into ethyl alcohol (ethanol). The correct answer is D) Zymase. Zymase is a complex of enzymes that plays a critical role in the fermentation process of yeast. It catalyzes the conversion of sugars, mainly glucose, into ethanol and carbon dioxide.

During fermentation, Zymase breaks down glucose through glycolysis into pyruvate, which is then converted into ethanol and carbon dioxide under anaerobic conditions. This process is utilized in the production of alcoholic beverages and in baking.

The other options—Diastase, Invertase, and Maltase—serve different functions. Diastase primarily breaks down starch into maltose; Invertase converts sucrose into glucose and fructose, while Maltase specifically breaks down maltose into glucose. None of these enzymes carry out the complete conversion of glucose to ethyl alcohol, which is why Zymase is the correct choice in this context. Understanding these distinctions is critical in biochemistry and industrial fermentation processes.