Which one of the following statements about microbes is not correct ?

Which one of the following statements about microbes is not correct ?

They are used in sewage treatment plants.
They are used in industrial fermenters for the production of beverages.
No antibiotic has been obtained from any microbe.
They are used to get many bioactive molecules for the treatment of diseases.
This question was previously asked in
UPSC NDA-2 – 2017
The correct answer is C) No antibiotic has been obtained from any microbe.
Statement C is incorrect. Many antibiotics are derived from microbes. For example, Penicillin is obtained from the fungus *Penicillium notatum*, and Streptomycin is obtained from the bacterium *Streptomyces griseus*.
Statements A, B, and D are correct applications of microbes:
A) Microbes (bacteria) are essential in sewage treatment for decomposing organic matter.
B) Microbes like yeast (fungus) are used in fermentation for producing beverages like beer and wine, and bacteria are used for yogurt, cheese, etc.
D) Microbes are genetically engineered or used as sources to produce various bioactive molecules, including insulin, vaccines, enzymes, and certain therapeutic drugs.
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