Control and Safety Examination
1. According to global health standards, what is the most cost-effective intervention for
disease control?
A. Widespread vaccination programs
B. Handwashing
C. The use of antibiotics
D. Public sanitation systems
Correct Answer: B
Rationale: The provided content explicitly states that handwashing is the most cost-effective
intervention for worldwide disease control and a primary method to prevent infection
transmission.
2. What term describes one-celled microorganisms?
A. Viruses
B. Bacteria
C. Fungi
D. Biofilm
Correct Answer: B
Rationale: The content defines bacteria specifically as "one celled microorganisms."
,3. Which of the following is produced by the immune system in response to a pathogen?
A. Antitoxin
B. Antibodies
C. Bacteria
D. Fungi
Correct Answer: B
Rationale: The content states that antibodies are produced by the immune system in response to
any pathogen.
4. A special group of antibodies that can neutralize a specific toxin is known as a(n):
A. Antibiotic
B. Vaccine
C. Antitoxin
D. Antigen
Correct Answer: C
Rationale: The definition provided specifies that an antitoxin is a special type of antibody that
neutralizes a specific toxin.
5. Which of the following is NOT listed as one of the five types of potentially harmful
pathogens?
A. Bacteria
B. Viruses
C. Saprophytes
D. Fungi
,Correct Answer: C
Rationale: The five types listed are bacteria, viruses, external parasites, fungi, and biofilm.
Saprophytes are defined as nonpathogenic bacteria.
6. Bacteria that are harmless and can even be beneficial are classified as:
A. Pathogenic
B. Nonpathogenic
C. Saprophytes
D. Mycobacterium
Correct Answer: B
Rationale: Nonpathogenic bacteria are defined as harmless and potentially beneficial.
7. Approximately what percentage of all bacteria are nonpathogenic?
A. 50%
B. 60%
C. 70%
D. 80%
Correct Answer: C
Rationale: The content fills the blank with "70, nonpathogenic."
8. Nonpathogenic bacteria that live on dead or decaying organic matter are called:
A. Pathogens
B. Saprophytes
C. Biofilm
D. Mycobacteria
, Correct Answer: B
Rationale: This is the exact definition of saprophytes given in the content.
9. The majority of skin infections are caused by which types of bacteria?
A. Mycobacterium and saprophytes
B. Staph and strep
C. Fungi and viruses
D. External parasites and biofilm
Correct Answer: B
Rationale: The content directly states that the majority of skin infections are caused by staph
and strep bacteria.
10. What is the term for a reason to withhold a certain treatment?
A. Contraindication
B. Infection
C. Pathogenicity
D. Efficacy
Correct Answer: A
Rationale: The content defines a contraindication as a "reason to withhold a certain treatment."
11. Which of the following is a sign of an MRSA infection?
A. Ringworm
B. Pimples or boils
C. Scabies
D. Head lice