Antibiotics
Which of the following precursor is added in the medium to get penicillin G?

Ammonium chloride
Phenyl acetic acid
Phenyl carbamic acid
Ammonium sulphate

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Antibiotics
Penicillin is produced by

aerobic fermentation followed by anaerobic fermentation
anaerobic fermentation
aerobic fermentation
anaerobic fermentation followed by aerobic fermentation

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