Question:

Answer: - c) Washing and scrubbing with soaps and detergents.

Question: Preservation:

Answer: - Slows microbial growth but does not reduce the number of existing microbes.

Question: Sterilization:

Answer: - Destruction of all microbial life.

Question: Decontamination:

Answer: - Mechanical removal of most microbes from living on intimate surfaces.

Question: Disinfection:

Answer: - Reduction of most microbial life on intimate surfaces.

Question: Which of the following best describe the difference between a disinfectant and an antiseptic?

Answer: - The first is an antimicrobial chemical used on inanimate surfaces or objects to remove most of the pathogenic microorganisms.

• The second is an antimicrobial chemical than can be used on the skin or tissues to achieve the same result.

• Question: The more bacteria present on or in something, the longer it takes to kill them all.

• True or False?

• Answer: - True

• Question: These microbes and infectious agents are “Sensitive” with regards to effect of antimicrobial procedures.

• Answer: - Bacillus vegetative cells

• - HIV

• - Escherichia species

• Question: These microbes and infectious agents are “Resistant” with regards to effect of antimicrobial procedures.

• Answer: - Bacillus endospores

• - Poliovirus

• - Prion

• - Pseudomonas species

• - Giardia cysts

• - Mycobacteria species

• Question: The decimal reduction time is the time it takes to kill 90% of a given bacterial population under certain conditions. If 90% of a population of 100,000 bacterial is killed in 10 minutes, how long would it take to reduce the population to 10 cells?

• Answer: - 40 minutes