Microbiology MCQs

The most frequently encountered clostridia species in gas gangrene is:

A. Clostridium botulinum
B. Clostridium welchii
C. Clostridium tetani
D. Clostridium difficile

Group A carbohydrate of Str. pyogenes cross reacts with human:

A. Synovial fluid
B. Myocardium
C. Cardiac valves
D. Vascular intima

ASO (Antistreptolysin 0) test is uesd for the diagnosis of:

A. Rheumatoid arthritis
B. Typhoid fever
C. Rheumatie fever
D. Rickettsial fever

Following are the characteristics of Vincent’s angina EXCEPT:

A. Ulcerative gingivostomatitis
B. Caused due to malnutrition
C. A symbiotic infection
D. Caused by leptospira interrogans

Pathogenesis of diphtheria is attributed to:

A. Invasion
B. Endotoxin
C. Exotoxin
D. Capsule

Leptospirosis, all are true except:

A. Faeces & urine of rodents is the cause
B. Onset of IgM in 2 days
C. Incubation period is 10 days
D. It is sensitive to penicillin

Lepromin test is useful for:

A. Diagnosis
B. Prognosis
C. Treatment plan
D. Epidemiology

Salivary peroxidise system is known to be effective agianst:

A. Actinomyces viscosus
B. Lactobacillus acidophilus
C. Streptococcus mutans
D. Veilonella parvula

Black pigmented anaerobes include all of the following except:

A. Tannerella
B. Porphyromonas
C. Buccae
D. Prevotella

Among The infectious diseases transmitted by food, one is:

A. Viral stomatitis
B. Diptheria
C. Tuberculosis
D. Typhoid fever

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