Which scientists established the full potential of penicillin as an effective antibiotic by improving its production?

  • A
    Ernest Chain and Alexander Fleming
  • B
    Howard Florey and Alexander Fleming
  • C
    Alexander Fleming
  • D
    Ernest Chain and Howard Florey

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Which acid is produced by the bacterium $Acetobacter$ $aceti$?

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Which of the following options represents the correct matching for the given lists?
List-$I$List-$II$
$(p)$ $Clostridium$ $butylicum$$(i)$ Vitamins
$(q)$ $Rhizopus$ $nigricans$$(ii)$ Sterins
$(r)$ $Ashbya$ $gossypii$$(iii)$ Steroids
$(s)$ $Monascus$ $purpureus$$(iv)$ Butyric acid

Continuous addition of sugars in 'fed-batch' fermentation is done to

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