BIOS 242 Microbiology with Lab Exam
3 (Latest Update ) Anatomy
and Physiology IV with Lab | Questions
& Answers | 100% Correct | Grade A -
Chamberlain
1. Which bacterial genus is responsible for Lyme disease?
A. Staphylococcus
B. Borrelia
C. Bacillus
D. Clostridium
Correct Answer: B. Borrelia
Rationale: Borrelia burgdorferi is a spirochete transmitted by ticks
causing Lyme disease.
2. Which bacterial genus produces shiga toxin causing
hemorrhagic diarrhea?
A. Escherichia
B. Salmonella
C. Shigella
,D. Vibrio
Correct Answer: C. Shigella
Rationale: Shigella dysenteriae produces shiga toxin leading to
bloody diarrhea.
3. Which bacterial genus is associated with dental caries?
A. Streptococcus
B. Lactobacillus
C. Actinomyces
D. All of the above
Correct Answer: D. All of the above
Rationale: These bacteria metabolize sugars to acids that erode
tooth enamel.
4. Which bacterial genus is responsible for nosocomial urinary
tract infections?
A. Escherichia
B. Klebsiella
C. Pseudomonas
D. All of the above
Correct Answer: D. All of the above
Rationale: These bacteria colonize catheters and hospital equipment
causing UTIs.
5. Which bacterial genus causes diphtheria?
,A. Corynebacterium
B. Streptococcus
C. Staphylococcus
D. Bacillus
Correct Answer: A. Corynebacterium
Rationale: Corynebacterium diphtheriae produces a toxin forming
pseudomembranes.
6. Which type of bacteria forms endospores for survival?
A. Bacillus and Clostridium
B. Staphylococcus and Streptococcus
C. Escherichia and Salmonella
D. Mycobacterium and Nocardia
Correct Answer: A. Bacillus and Clostridium
Rationale: Endospores allow survival under extreme heat,
desiccation, and chemicals.
7. Which bacterial genus causes botulism?
A. Clostridium
B. Bacillus
C. Staphylococcus
D. Escherichia
Correct Answer: A. Clostridium
Rationale: Clostridium botulinum produces botulinum neurotoxin
causing flaccid paralysis.
, 8. Which bacterial genus causes tetanus?
A. Clostridium
B. Bacillus
C. Staphylococcus
D. Streptococcus
Correct Answer: A. Clostridium
Rationale: Clostridium tetani produces tetanospasmin, a neurotoxin
causing spastic paralysis.
9. Which bacterial genus causes anthrax?
A. Bacillus
B. Clostridium
C. Staphylococcus
D. Streptococcus
Correct Answer: A. Bacillus
Rationale: Bacillus anthracis produces spores and toxins causing
anthrax.
10. Which bacterial genus causes plague?
A. Yersinia
B. Salmonella
C. Escherichia
D. Clostridium
Correct Answer: A. Yersinia
Rationale: Yersinia pestis causes bubonic and pneumonic plague.
3 (Latest Update ) Anatomy
and Physiology IV with Lab | Questions
& Answers | 100% Correct | Grade A -
Chamberlain
1. Which bacterial genus is responsible for Lyme disease?
A. Staphylococcus
B. Borrelia
C. Bacillus
D. Clostridium
Correct Answer: B. Borrelia
Rationale: Borrelia burgdorferi is a spirochete transmitted by ticks
causing Lyme disease.
2. Which bacterial genus produces shiga toxin causing
hemorrhagic diarrhea?
A. Escherichia
B. Salmonella
C. Shigella
,D. Vibrio
Correct Answer: C. Shigella
Rationale: Shigella dysenteriae produces shiga toxin leading to
bloody diarrhea.
3. Which bacterial genus is associated with dental caries?
A. Streptococcus
B. Lactobacillus
C. Actinomyces
D. All of the above
Correct Answer: D. All of the above
Rationale: These bacteria metabolize sugars to acids that erode
tooth enamel.
4. Which bacterial genus is responsible for nosocomial urinary
tract infections?
A. Escherichia
B. Klebsiella
C. Pseudomonas
D. All of the above
Correct Answer: D. All of the above
Rationale: These bacteria colonize catheters and hospital equipment
causing UTIs.
5. Which bacterial genus causes diphtheria?
,A. Corynebacterium
B. Streptococcus
C. Staphylococcus
D. Bacillus
Correct Answer: A. Corynebacterium
Rationale: Corynebacterium diphtheriae produces a toxin forming
pseudomembranes.
6. Which type of bacteria forms endospores for survival?
A. Bacillus and Clostridium
B. Staphylococcus and Streptococcus
C. Escherichia and Salmonella
D. Mycobacterium and Nocardia
Correct Answer: A. Bacillus and Clostridium
Rationale: Endospores allow survival under extreme heat,
desiccation, and chemicals.
7. Which bacterial genus causes botulism?
A. Clostridium
B. Bacillus
C. Staphylococcus
D. Escherichia
Correct Answer: A. Clostridium
Rationale: Clostridium botulinum produces botulinum neurotoxin
causing flaccid paralysis.
, 8. Which bacterial genus causes tetanus?
A. Clostridium
B. Bacillus
C. Staphylococcus
D. Streptococcus
Correct Answer: A. Clostridium
Rationale: Clostridium tetani produces tetanospasmin, a neurotoxin
causing spastic paralysis.
9. Which bacterial genus causes anthrax?
A. Bacillus
B. Clostridium
C. Staphylococcus
D. Streptococcus
Correct Answer: A. Bacillus
Rationale: Bacillus anthracis produces spores and toxins causing
anthrax.
10. Which bacterial genus causes plague?
A. Yersinia
B. Salmonella
C. Escherichia
D. Clostridium
Correct Answer: A. Yersinia
Rationale: Yersinia pestis causes bubonic and pneumonic plague.
