Microbial Genetics

• Statement (I) is True: The family Enterobacteriaceae is a large, diverse family of Gram-negative, facultatively anaerobic, non-spore-forming rod-shaped bacteria that ferment D-glucose with the production of acid and/or gas, reduce nitrates to nitrites, and are oxidase-negative.
• Statement (II) is True: The majority of medically and agriculturally important members of Enterobacteriaceae are pathogens or opportunistic pathogens in animals and humans, including Salmonella, Escherichia coli (ETEC, STEC/EHEC), Shigella, Yersinia pestis, Klebsiella pneumoniae, and Proteus.
• Conclusion: Both Statement (I) and Statement (II) are true (Option 1).

Correct option: (1) Both Statement (I) and Statement (II) are true.

• Historical Genesis of Thermal Canning (Appertization):
• Nicolas Appert (1749–1841):
• French confectioner and chef who invented thermal hermetic preservation in glass jars in 1809, winning the 12,000-franc prize offered by Napoleon Bonaparte's directory.
• Universally recognized as the Father of Canning (thermal sterilization process was termed Appertization).
• Conclusion: Nicolas Appert (Option 1).

Correct option: (1) Nicolas Appert

Evaluating the Assertion and Reason concerning Microbiological changes in milk during production and processing:

The correct answer is Option 1: Both (A) and (R) are true and (R) is the correct explanation of (A).