2025 BMT Rev 1

What type of media is Mannitol Salt Agar (MSA)?

• Both Selective and Differential Media

• Differential Media

• Selective Media

• General Purpose Media

Which of the following is a selective agent in Baird Parker Agar (BPA)?

• Mannitol

• Tellurite

• Glucose

• Phenol red

Identify the type of media that allows for the growth of specific bacteria while inhibiting others.

• Complex Media

• Selective Media

• General Purpose Media

• Differential Media

What is the function of a differential agent in culture media?

• To inhibit growth of certain microorganisms

• To provide nutrients for all microorganisms

• To produce visible changes in microbial growth

• To sterilize the media

What is the role of phenol red in Mannitol Salt Agar?

• To provide nutrients

• To enhance colony size

• To indicate pH changes

• To inhibit bacterial growth

What is the purpose of performing quality control checks on freshly prepared media?

• To confirm the media's pH level.

• To only verify the media's nutritive and selective properties.

• To only ensure the media is sterile and free from contaminants.

• To verify the media's nutritive and selective properties and ensure the media is sterile and free from contaminants.

During the preparation of solid culture media, what is the purpose of tempering the agar?

• To dry the agar.

• To sterilize the agar.

• To cool the agar to a solid state.

• To keep the agar warm for pouring into Petri dishes.

Which type of indicator is the autoclave tape?

• Digital indicator.

• Physical indicator.

• Chemical indicator.

• Biological indicator.

What is the difference between sterilization and disinfection?

• Sterilization and disinfection are the same processes.

• Sterilization is used for surfaces, while disinfection is used for tools.

• Sterilization destroys all viable microbes, including endospores and viruses, while disinfection only destroys vegetative cells and viruses.

• Disinfection destroys all viable microbes, including endospores and viruses, while sterilization only destroys vegetative cells and viruses.

To protect the sample, user, and environment from microbial contamination

Which class of BSC provides protection to the sample, user, and environment?

• Class I only.

• Class II only.

• Class III only.

• Class II and III.