Q. Polymyxins inhibits the growth of the microbes by carrying out which of the following actions?

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Q. Streptomycin is produced by which of the following organisms?

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Q. Antibiotic produced by Streptomyces rimosus is _______________

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Q. Which of the following inhibits protein synthesis by combining with the 50S subunit ribosome?

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Q. Tyrocidines are more effective against ___________________

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Q. Which of the following is the most accurate method for microbial assay of antibiotics?

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Q. The international unit of penicillin is defined by how much amount of International Standard?

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Q. Zone of inhibition is observed in tube-dilution method.

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Q. Pigs respond dramatically to the addition of which of the following antibiotics to their diet?

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Q. Which of the following antibiotic have a sparing effect on the B12 in the diet?

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Q. Antibiotics are not effective against plant pathogens.

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Q. Nystatin is produced from the strain _____________________

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Q. Griseofulvin is useful in the therapy of nonsystemic fungal infections.

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Q. Acycloguanosine is a nucleoside analog which is active against ___________________

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Q. Which of the following has its antiviral action attributed to interference of protein synthesis?

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Q. Amantadine is very effective against influenza A virus.

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Q. Which of the following is effective in the control of tuberculosis in humans?

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Q. Anthramycin is which of the following type of antibiotic?

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Q. Which of the following is a drug that interferes with the process of DNA production in the virus that causes genital herpes?

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Q. Which of the antibiotic is not used as a food preservative ?

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