Question

Continuous addition of sugars in ‘fed batch’ fermentation is done to

• A. Purify enzymes
• B. Produce methane
• C. Obtain antibiotics
• D. Degrade sewage

Answer 1

The correct option is C

Obtain antibiotics

The correct option is C.

Explanation for correct option:

1. Sugar is added continuously in ‘fed batch’ fermentation to obtain antibiotics.
2. This is done because sugars facilitate the metabolism of most microorganisms and provide the substrate for respiration and are used as a source of energy.

Explanation for incorrect options:

Option A:

1. Enzyme purification is done by the methods of centrifugation, filtration, ultrafiltration, and chromatography.

Option B:

1. Anaerobic fermentation is used for the production of methane.

Option D:

1. Anaerobic fermentation is used to degrade sewage.

Final Answer: Sugar is added continuously in ‘fed batch’ fermentation to form antibiotics.