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Microbes in Human Welfare — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYMicrobes in Human Welfare1 Mark
MCQ
Streptomycin is produced by:
  • A
    Streptomyces griseus
  • B
    Streptomyces venezuelae
  • C
    Streptomyces fradiae
  • D
    All of the above
✓

Answer

  1. Streptomyces griseus

Explanation:

Streptomycin which is produced by strains of Streptomyces griseus, exhibits antibiotic activity against various Gram-positive and Gram-negative bacteria but is ineffective against the fungal pathogens of man.

Waksman isolated the antibiotic in 1943 and found it to be active against Gram-negative bacteria.

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