MCQ
Streptomycin is produced by:
- AStreptomyces griseus
- BStreptomyces venezuelae
- CStreptomyces fradiae
- DAll of the above
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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| $Country$ | $Birth\, rate$ $/1000$ | $Death$ $/1000$ |
| $M$ | $15$ | $5$ |
| $N$ | $25$ | $10$ |
| $O$ | $35$ | $18$ |
| $P$ | $48$ | $41$ |
$II.$ It varies from $15-100$ copies per cell. Choose regarding the above statements.