Question 1

Which of the following best describes the process of washing dishes in a dishwasher with detergent and hot water?

Accepted Answer

Sanitization

Question 2

A chemical agent that dissolves lipids can damage which of the following microbial structures?

Accepted Answer

Cell membrane

Question 3

Which of the following is an example of pasteurization?

Accepted Answer

Heating milk at $$72^\circ C$$ for 15 seconds

Question 4

Aseptic technique refers to which of the following?

Accepted Answer

The absence of pathogenic microorganisms

Question 5

Antimicrobial agents that damage nucleic acids also affect which cellular process?

Accepted Answer

Protein synthesis

Question 6

An instrument that will come into contact with only the skin of a patient should be disinfected with which of the following?

Accepted Answer

Intermediate-level disinfectant

Question 7

Boiling water for 10 minutes is effective in eliminating which of the following?

Accepted Answer

Most pathogenic bacteria and viruses

Question 8

Ultra-high-temperature sterilization is most effective for which of the following?

Accepted Answer

Long-term storage of milk without refrigeration

Question 9

Which method is commonly used for microbial control in fresh fruits and vegetables?

Accepted Answer

Gamma irradiation

Question 10

Which of the following can be used to reduce microbes in the air of a hospital operating room?

Accepted Answer

HEPA filtration

Question 11

Seventy percent alcohol is effective against which of the following?

Accepted Answer

Enveloped viruses

Question 12

Which of the following is used to sterilize items that should not, or cannot, be exposed to heat or water?

Accepted Answer

Ethylene oxide gas

Question 13

Which of the following achieves sterilization in the shortest period of time?

Accepted Answer

Incineration

Question 14

Disinfecting agents naturally produced by microorganisms are called:

Accepted Answer

Antibiotics

Question 15

Why are endospores used to measure the effectiveness of autoclave sterilization?

Accepted Answer

They are the most resistant microbial form

Question 16

Which method is most appropriate for sterilizing a hospital mattress?

Accepted Answer

Gaseous ethylene oxide

Question 17

Which of the following disinfectants is most toxic to humans and should be used with extreme caution?

Accepted Answer

Aldehydes (e.g., formaldehyde)

Question 18

Hydrogen peroxide is an effective:

Accepted Answer

Disinfectant and antiseptic

Question 19

The process of incineration is used for which of the following?

Accepted Answer

Sterilizing and disposing of contaminated materials

Question 20

Dr. Joseph Lister is historically known for using which chemical for surgical antisepsis?

Accepted Answer

Phenol

Microbiology Chapter 9 Review: Microbial Control Methods and Agents

Study Guide - Practice Questions