Klebsiella pneumoniae MCQs Quiz: A Set of Questions, Options, and Answers

Introduction

Here is a Klebsiella pneumoniae MCQs Quiz Set with questions, options, and answers.

Klebsiella pneumoniae MCQs Quiz

1. What type of organism is Klebsiella pneumoniae?

A) Virus
B) Gram-positive bacterium
C) Gram-negative bacterium
D) Fungus

2. What is the typical shape of Klebsiella pneumoniae?

A) Cocci
B) Bacilli
C) Spirillum
D) Filamentous

3. What is the natural habitat of Klebsiella pneumoniae?

A) Skin
B) Intestinal tract
C) Respiratory tract
D) Blood

4. Which disease is most commonly associated with Klebsiella pneumoniae?

A) Pneumonia
B) Tuberculosis
C) Tetanus
D) Typhoid fever

5. What type of pneumonia does Klebsiella pneumoniae cause?

A) Community-acquired pneumonia
B) Atypical pneumonia
C) Aspiration pneumonia
D) Hospital-acquired pneumonia

6. Which stain is used to identify Klebsiella pneumoniae?

A) Acid-fast stain
B) Gram stain
C) Giemsa stain
D) India ink stain

7. How does Klebsiella pneumoniae appear under Gram staining?

A) Purple cocci
B) Pink bacilli with a capsule
C) Purple spiral-shaped
D) Pink filamentous

8. What is the major virulence factor of Klebsiella pneumoniae?

A) Exotoxin
B) Capsule
C) Endospore
D) Flagella

9. Which medium is commonly used to grow Klebsiella pneumoniae?

A) MacConkey agar
B) Sabouraud agar
C) Blood agar
D) Chocolate agar

10. How does Klebsiella pneumoniae appear on MacConkey agar?

A) Non-lactose fermenting colonies
B) Lactose-fermenting pink colonies
C) Transparent colonies
D) Green metallic colonies

11. What type of infection is commonly caused by Klebsiella pneumoniae in healthcare settings?

A) Urinary tract infection (UTI)
B) Skin infection
C) Gastroenteritis
D) Malaria

12. Which antibiotics are commonly used to treat Klebsiella pneumoniae infections?

A) Amoxicillin
B) Cephalosporins and carbapenems
C) Tetracyclines
D) Erythromycin

13. What does “ESBL” in Klebsiella pneumoniae ESBL stand for?

A) Extra-sensitive beta-lactamase
B) Extended-spectrum beta-lactamase
C) Erythromycin-sensitive beta-lactamase
D) Enzyme-sensitive beta-lactamase

14. Which of the following is a risk factor for Klebsiella pneumoniae infection?

A) Poor hygiene
B) Long-term hospitalization
C) Use of mechanical ventilation
D) All of the above

15. How does the capsule help Klebsiella pneumoniae evade the immune system?

A) Produces toxins
B) Prevents phagocytosis
C) Inhibits antibiotic entry
D) Kills neutrophils

16. Which enzyme is produced by Klebsiella pneumoniae to resist beta-lactam antibiotics?

A) Coagulase
B) Beta-lactamase
C) Catalase
D) Urease

17. What is a common symptom of Klebsiella pneumoniae-induced pneumonia?

A) Rust-colored sputum
B) Blood-tinged, thick, and mucoid sputum (“currant jelly” sputum)
C) Greenish sputum
D) Frothy sputum

18. What type of immunity plays a key role in fighting Klebsiella pneumoniae infections?

A) Cellular immunity
B) Humoral immunity
C) Innate immunity
D) All of the above

19. Which population is most at risk of severe Klebsiella pneumoniae infections?

A) Healthy adults
B) Immunocompromised individuals
C) Athletes
D) Infants only

20. How is Klebsiella pneumoniae most commonly transmitted?

A) Airborne droplets
B) Contaminated hands or surfaces
C) Mosquito bites
D) Foodborne transmission

Answer

1. C) Gram-negative bacterium
2. B) Bacilli
3. B) Intestinal tract
4. A) Pneumonia
5. D) Hospital-acquired pneumonia
6. B) Gram stain
7. B) Pink bacilli with a capsule
8. B) Capsule
9. A) MacConkey agar
10. B) Lactose-fermenting pink colonies
11. A) Urinary tract infection (UTI)
12. B) Cephalosporins and carbapenems
13. B) Extended-spectrum beta-lactamase
14. D) All of the above
15. B) Prevents phagocytosis
16. B) Beta-lactamase
17. B) Blood-tinged, thick, and mucoid sputum (“currant jelly” sputum)
18. D) All of the above
19. B) Immunocompromised individuals
20. B) Contaminated hands or surfaces