MCQ: Microbiology: Bacteriology: Bacterial Skin Infections

 You can find the answer of these multiple choice questions related to bacterial skin infections at the end of this blog post. Write down your answers and cross check with the answer key provided.
MCQ Bacteriology 39:  A massive lesion caused by spread of Staphylococcus aureus infection (often on the neck and upper back) is called a:
a. Boil b. Abscess c. Furuncle d.Carbuncle e. Pustule
scalded skin syndrome (also known as Pemphigus neonatorum or Ritter's disease)
scalded skin syndrome (also known as Pemphigus neonatorum or Ritter’s disease)

MCQ Bacteriology 40: Scalded skin syndrome is caused by exotoxin (exfoliatins) produced by:

a. Streptococcus pyogens
b. Pseudomonas aeruginosa
c. Staphylococcus aureus
d. Propionibacterium acne
e. Demodex folliculorum
MCQ Bacteriology 41: Which of the following microorganisms causes scarlet fever?
a. Streptococcus pyogens
b. Pseudomonas aeruginosa
c. Staphylococcus aureus
d. Propionibacterium acne
e. Demodex folliculorum
MCQ Bacteriology 42: The pus producing skin infections (Pyoderma) can be caused by
a. Staphylococci
b. Streptococci
c. Corynebacteria
d. A combination of staphylococci, streptococci and corynebacteria
e. All of these
Impetigo
Impetigo
MCQ Bacteriology 43: Which of the following is not the characteristics of impetigo?
a. Common in children
b. Can be caused by Staphylococcus aureus
c. Can be caused by Streptococcus pyogenes
d. Is highly contagious
e. Can be caused by pseudomonads
MCQ Bacteriology 44: Burn patients often develop nosocomial infection caused by:
a. Streptococcus epidermis
b. Corynebacterium spp.
c. Staphylococcus aureus
d. Candida albicans
e. Pseudomonas aeruginosa
MCQ Bacteriology 45: The bacteria that multiply in blocked skin pores, metabolize sebum, and can lead to the development of acne are:
a. Pseudomonas aeruginosa
b. Propionibacterium spp.
c. Serratia marcescens
d. Streptococcus pyogenes
e. Acne is not caused by bacterial infection
MCQ Bacteriology 46: Bacterial conjunctivitis (inflammation of the eye conjunctiva) can be caused by:
a. Staphylococcus aureus
b. Streptococcus pneumoniae
c. Neisseria gonorrhoeae
d. Pseudomonas aeruginosa
e. All of the above bacteria can cause conjunctivitis
MCQ Bacteriology 47: The leading cause of preventable blindness in the world is caused by:
a. Chlamydia trachomatis
b. Haemophilus influenzae
c. Neisseria gonorrhoeae
d Staphylococcus aureus
e. Streptococcus pneumoniae

Gas gangrene of foot
Gas gangrene of foot
MCQ Bacteriology 48: Gas gangrene is most likely associated with infection with:
a. Staphylococcus aureus
b. Clostridium perfringenes
c. Streptococcus pneumoniae
d. Neisseria gonorrhoeae
e. Pseudomonas aeruginosaa
Answer Key: 
39. c. Furuncle
40.c. Staphylococcus aureus
41.a. Streptococcus pyogens
42.e. All of these 
43.e. Can be caused by pseudomonads
44.e. Pseudomonas aeruginosa
45.b. Propionibacterium spp.
46. e. All of the above bacteria can cause conjunctivitis
47.a. Chlamydia trachomatis
48. b. Clostridium perfringenes
Test your understanding in Bacteriology. Try our dedicated MCQ Quiz section for Bacteriology. 

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