Question

Yeast is used in the production of:

• A. sugar
• B. alcohol
• C. hydrochloric acid
• D. oxygen

Answer 1

The correct option is B

alcohol

The correct option is B.

Explanation of the correct answer:

1. Yeast is a eukaryotic and unicellular fungus that reproduces asexually.
2. It is dependent on oxygen and food like sugar to grow and multiply.
3. The most common yeast species used in making food and beverages is Saccharomyces cerevisiae.
4. This yeast is also known as baker’s yeast or brewer’s yeast.
5. It produces carbon dioxide and alcohol (ethanol) by converting the sugar and starch present in the food or substrate.
6. This process is known as fermentation.

Explanation of the incorrect options:

Option A:

In the process of fermentation, yeast uses sugar as a substrate and converts it into carbon dioxide and alcohol. It does not produce sugar.

Option C:

Yeast produces alcohol and carbon dioxide through fermentation, not hydrochloric acid.

Option D:

1. Yeast requires oxygen for its growth and multiplication.
2. Oxygen is said to be an important factor in the production of alcohol and carbon dioxide.
3. It is not produced by yeast rather it is consumed by them.

Final Answer: yeast is used in the production of alcohol.