Microbiology Study Questions #2

10 Questions | By Amandaregal | Updated: Mar 21, 2022 | Attempts: 155

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1.

Certain dyes may be added to culture media to:
- A.
  
  Indicate metabolic activity of microorganisms
- B.
  
  Selectively grow certain microogranisms by inhibiting the growth of others
- C.
  
  Both
- D.
  
  Neither
2.

One of the following is a selective medium used to isolate pathogenic gram negative bacilli from stool specimen:
- A.
  
  Salmonella-shigella
- B.
  
  Sheep blood agar
- C.
  
  MacConkey
- D.
  
  Eosin-methylene blue
3.

The first man to use an antiseptic in surgery to prevent infection was:
- A.
  
  Lister
- B.
  
  Koch
- C.
  
  Pasteur
- D.
  
  Tyndal
4.

The study of the factors that determine the occurrence of disease in populations is called:
- A.
  
  Morbidity
- B.
  
  Public health
- C.
  
  Epidemiology
- D.
  
  Infection control
5.

The best choice to disinfect a nonmetallic surfaces contaminated with blood would be:
- A.
  
  A phenol solution
- B.
  
  Fresh 5% bleach
- C.
  
  70% isopropyl alcohol
- D.
  
  Green soap
6.

The most powerful method of sterilization by heat is:
- A.
  
  Dry heat
- B.
  
  Boiling
- C.
  
  Live steam
- D.
  
  Steam under pressure
7.

Virulence is:
- A.
  
  Infectiveness
- B.
  
  Pathogenicity
- C.
  
  Degree of pathogenicity
- D.
  
  Invasiveness
8.

An opportunistic organism is a:
- A.
  
  Harmless organism
- B.
  
  Normal flora organism
- C.
  
  Helpful organism
- D.
  
  Potentially harmful organism
9.

Organisms that have become established in an area of the human body are referred to as:
- A.
  
  Normal flora
- B.
  
  Opportunists
- C.
  
  Symbiotic
- D.
  
  Pathogens
10.

Organisms which grow in the presence of atmospheric oxygen are:
- A.
  
  Anaerobes
- B.
  
  Parasites
- C.
  
  Aerobes
- D.
  
  Hosts