PSI BARBERING COMPREHENSIVE EXAM
REVIEW 2026 QUESTIONS AND
SOLUTIONS
1. Disinfection is NOT effective against which of the following?
A. Bacteria
B. Fungi
C. Viruses
D. Bacterial spores
Correct Answer: D
Rationale: Disinfection destroys most bacteria, fungi, and viruses on surfaces, but it
is NOT effective against bacterial spores. Spores are highly resistant and require
sterilization to be eliminated.
2. What type of bacteria are pus-forming and grow in clusters like bunches of
grapes?
A. Bacilli
B. Spirilla
C. Staphylococci
D. Diplococci
Correct Answer: C
Rationale: Staphylococci are pus-forming bacteria that grow in clusters resembling
,bunches of grapes. They are responsible for conditions such as food poisoning and
skin infections.
3. Diplococci are spherical bacteria that grow in pairs and cause diseases such
as:
A. Tuberculosis
B. Pneumonia
C. Tetanus
D. Syphilis
Correct Answer: B
Rationale: Diplococci are spherical bacteria that grow in pairs and are known to
cause pneumonia.
4. What type of bacteria rarely demonstrate self-movement and are
transmitted in the air, dust, or within the substance in which they settle?
A. Bacilli
B. Spirilla
C. Cocci
D. Flagella
Correct Answer: C
Rationale: Cocci rarely show active motility and are transmitted through air, dust, or
settled substances.
,5. A disinfectant that is fungicidal is capable of destroying:
A. Bacteria
B. Viruses
C. Spores
D. Parasites
Correct Answer: B
Rationale: A fungicidal disinfectant is capable of destroying viruses.
6. Which of the following is a mechanical process using soap and water or
detergent and water?
A. Sterilization
B. Disinfection
C. Sanitizing
D. Antiseptic treatment
Correct Answer: C
Rationale: Sanitizing is a mechanical process (scrubbing) using soap and water or
detergent and water.
7. During the inactive stage, certain bacteria can:
A. Die
B. Divide
, C. Multiply rapidly
D. Become harmless
Correct Answer: B
Rationale: During the inactive (spore-forming) stage, certain bacteria can divide.
8. An inflammation is characterized by:
A. Redness and heat only
B. Swelling and pain only
C. Redness, heat, swelling, and pain
D. Itching and redness
Correct Answer: C
Rationale: Inflammation is characterized by redness, heat, swelling, and pain.
9. Which of the following are single-celled microorganisms that have both
plant and animal characteristics?
A. Viruses
B. Bacteria
C. Fungi
D. Parasites
Correct Answer: B
Rationale: Bacteria are single-celled microorganisms that possess characteristics
of both plants and animals.
REVIEW 2026 QUESTIONS AND
SOLUTIONS
1. Disinfection is NOT effective against which of the following?
A. Bacteria
B. Fungi
C. Viruses
D. Bacterial spores
Correct Answer: D
Rationale: Disinfection destroys most bacteria, fungi, and viruses on surfaces, but it
is NOT effective against bacterial spores. Spores are highly resistant and require
sterilization to be eliminated.
2. What type of bacteria are pus-forming and grow in clusters like bunches of
grapes?
A. Bacilli
B. Spirilla
C. Staphylococci
D. Diplococci
Correct Answer: C
Rationale: Staphylococci are pus-forming bacteria that grow in clusters resembling
,bunches of grapes. They are responsible for conditions such as food poisoning and
skin infections.
3. Diplococci are spherical bacteria that grow in pairs and cause diseases such
as:
A. Tuberculosis
B. Pneumonia
C. Tetanus
D. Syphilis
Correct Answer: B
Rationale: Diplococci are spherical bacteria that grow in pairs and are known to
cause pneumonia.
4. What type of bacteria rarely demonstrate self-movement and are
transmitted in the air, dust, or within the substance in which they settle?
A. Bacilli
B. Spirilla
C. Cocci
D. Flagella
Correct Answer: C
Rationale: Cocci rarely show active motility and are transmitted through air, dust, or
settled substances.
,5. A disinfectant that is fungicidal is capable of destroying:
A. Bacteria
B. Viruses
C. Spores
D. Parasites
Correct Answer: B
Rationale: A fungicidal disinfectant is capable of destroying viruses.
6. Which of the following is a mechanical process using soap and water or
detergent and water?
A. Sterilization
B. Disinfection
C. Sanitizing
D. Antiseptic treatment
Correct Answer: C
Rationale: Sanitizing is a mechanical process (scrubbing) using soap and water or
detergent and water.
7. During the inactive stage, certain bacteria can:
A. Die
B. Divide
, C. Multiply rapidly
D. Become harmless
Correct Answer: B
Rationale: During the inactive (spore-forming) stage, certain bacteria can divide.
8. An inflammation is characterized by:
A. Redness and heat only
B. Swelling and pain only
C. Redness, heat, swelling, and pain
D. Itching and redness
Correct Answer: C
Rationale: Inflammation is characterized by redness, heat, swelling, and pain.
9. Which of the following are single-celled microorganisms that have both
plant and animal characteristics?
A. Viruses
B. Bacteria
C. Fungi
D. Parasites
Correct Answer: B
Rationale: Bacteria are single-celled microorganisms that possess characteristics
of both plants and animals.
