From the given below,which one increases vitamin $B_{12}$ in our stomach and also plays a very beneficial role in checking disease-causing microbes?

  • A
    Antibiotic
  • B
    Lactic acid bacteria
  • C
    Saccharomyces cerevisiae
  • D
    Aspergillus niger

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Which of the following statements is $NOT$ true regarding antibiotics?

Through the extensive knowledge of which of the following, are microorganisms used in various ways for human welfare?

Match Column-$I$ with Column-$II$ and select the correct option.
Column-$I$Column-$II$
$(a)$ Brown rust of wheat$(i)$ Virus
$(b)$ Tobacco mosaic$(ii)$ Bacteria
$(c)$ Black rot of crucifers$(iii)$ Fungi
$(d)$ Red rot of sugarcane

Fleming,Chain,and Florey were awarded the Nobel Prize for their work on antibiotics in ...........

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