Antibiotics
Which of the following organism(s) produce(s) tetracycline?

Steptomyces ramosus
Nocardia sulphurea
All of these
Steptomyces aureofaciens

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Antibiotics
Penicillin is produced by

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

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