Tag: introduction to microbiology

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Questions Related to introduction to microbiology

Multiple choice biology introduction to microbiology commercial use of microorganism microbes in household and industry food production and microorganisms

First antibiotic discovered was ____________.

  1. Penicillin

  2. Ampicillin

  3. Celin

  4. Erythrocin
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The first antibiotic discovered was penicillin. It was discovered in 1828 by Alexander Fleming when he noticed the growth of mold-fungus in the culture of Staphylococcus and there were no bacteria in the region where the fungus was growing. It was because the fungus was secreting the anti-biotic that had killed the bacterial cells in the culture. The fungus was recognized as Penicillium.

Hence, the correct answer is 'Penicillin'.

Multiple choice biology introduction to microbiology commercial use of microorganism microbes in household and industry food production and microorganisms

Terramycin is obtained from

  1. Streptomyces venezuelae

  2. Streptomyces aureofaciens

  3. Streptomyces rimosus

  4. Streptomyces griseus
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Terramycin is an antibiotic derived from Streptomyces rimosus, a species of actinomycete isolated from a soil sample. It is amphoteric and forms a hydrochloride and a sodium salt. Terramycin had a low degree of toxicity in animals and that the crystalline hydrochloride salt possessed a wide range of antibacterial activity against both Gram-positive and Gram-negative organisms
So, the correct answer is 'Streptomyces rimosus'