Which of the following is the most common microbe used for the conversion of sugar into bioethanol?

Correct option is B

Role of Saccharomyces cerevisiae:
· Also known as baker’s yeast, Saccharomyces cerevisiae is the most widely used microbe for the fermentation of sugar to produce bioethanol.
· During fermentation, sugars like glucose and sucrose are converted into ethanol and carbon dioxide.
Why Saccharomyces cerevisiae is Preferred:
· High ethanol yield.
· Tolerance to ethanol concentrations.
· Ability to ferment a variety of sugars efficiently.
· Robust growth under industrial fermentation conditions.
Information Booster: 1. Bioethanol Production Process:
· Hydrolysis: Converts starch or cellulose into simple sugars.
· Fermentation: Saccharomyces cerevisiae converts sugars into ethanol and CO₂.
2. Applications of Bioethanol:
· Biofuel for vehicles (blended with gasoline).
· Renewable alternative to fossil fuels.
3. Why Yeast is Preferred:
· Rapid fermentation.
· Easy scalability for industrial purposes.