Microbiology Quiz

Which method is used for multiplying microbial organisms under controlled laboratory conditions?

• Microscopical Examination

• Culture

• Casein hydrolysis test

• Biochemical test

Which type of culture media is used for the production of alpha amylase?

• Basic Media

• Solid media

• Liquid media

• Enriched media

What is the color of Bacillus cells with green endospores in the spore staining technique?

• Violet

• Green

• Blue

• Red

Which test is used to determine the ability of microorganisms to produce casinase enzyme?

• Nitrate Reduction Test

• Gelatinase test

• Casein hydrolysis test

• Amylase test

What is the aim of the Nitrate Reduction Test?

• To determine the ability of m.o to produce casinase enzyme

• To show the ability of B. subtilis to produce nitrate reductase enzyme

• To prevent the colonization of the host by pathogens

• To determine the ability of m.o to produce amylase enzyme

Which bacteria shows slow liquefaction in the Gelatinase test?

• B. anthracis

• Lactobacillus spp.

• B. subtilis

• Bacillus spp.

What is the color of the media in the Amylase test when Bacillus spp. shows a positive result?

• Violet

• Green

• Blue

• Red

Which type of media is De Man, Rogosa and Sharpe (MRS) agar for Lactobacillus?

• Semisolid media

• Solid media

• Liquid media

• Selective media

What is the color of Lactobacilli cells in the Gram staining technique?

• Violet

• Blue

• Green

• Red

Which test is used to determine the ability of B. subtilis to produce nitrate reductase enzyme?

• Gelatinase test

• Amylase test

• Nitrate Reduction Test

• Casein hydrolysis test