MICRO LAB MODULE 1 PART 1 QUIZ

A used agar with pathogens should be autoclaved before disposal to a container.

• TRUE

• FALSE

Sterilize inoculating loop by flame sterilization until red-hot. Allow the loop to cool by blowing it dry.

• TRUE

• FALSE

Disinfection of the working table using 70% alcohol or Lysol will destroy endospores and kill vegetative cells.

• TRUE

• FALSE

The effect of ordinary refrigerator on the organisms is merely inhibition of growth.

• TRUE

• FALSE

An example of potential contamination of microbial cultures is:

• Placing test tube caps on the tabletops

• Keeping agar plates open for long periods of time

• Forgetting to heat the inoculating loops

• All of the above

The instrument used in the inoculation of a deep tubed media:

• Inoculating loop

• Inoculating needle

• Sterile swab

• Forceps

Arrange the following on the proper doffing of PPE:

(e.g. A,B,C,D,E)

A. Laboratory gown

B. Face mask

C. Face shield

D. Gloves

E. Shoe cover

• E,D,C,A,B

• A,B,D,C,E

• E,D,A,C,B

• A,B,C,D,E

It serves as the primary means to protect the laboratory worker and the surrounding environment from pathogens.

• Biological refrigerator

• PPE

• HEPA Filter

• Microbiological safety cabinet

Used in microbiology to detect production of gas by microorganisms.

• Durham tubes

• Screw capped tubes

• Gas Pak Jar

• UV-VIS

Sweet and salty foods frequently don't require refrigeration to prevent spoilage because:

• They contain toxic alkaline chemicals

• They have high solute concentration

• They usually have low pH

• They have insufficient nutrients to support microbial growth