Group A carbohydrate of Str. pyogenes cross reacts with human_________________?
A. Synovial fluid
B. Myocardium
C. Cardiac valves
D. Vascular intima
Bacteriology
The most frequently encountered clostridial species in gas gangrene is______________?
The most frequently encountered clostridial species in gas gangrene is______________?
A. Clostridium botulinum
B. Clostridium welchii
C. Clostridium tetani
D. Clostridium difficile
In small intestine, cholera toxin acts by______________?
In small intestine, cholera toxin acts by______________?
A. ADP – ribosylation of the G regulatory protein
B. Inhibition of adenyl cyclase
C. Activation of GTPase
D. Active absorption of NaCI
Phospholipid used to investigate syphilis by the reagin test is________________?
Phospholipid used to investigate syphilis by the reagin test is________________?
A. Cardioli
B. Plasminogen
C. Palmityl lecithin
D. Serine
Staphylococcal food poisoning includes the following features_______________?
Staphylococcal food poisoning includes the following features_______________?
A. Incubation period of 24 hours
B. Requires immediate antibiotics
C. Common with dairy products
D. Heat labile enterotoxin
Fimbriae are demonstrated by ___________________?
Fimbriae are demonstrated by ___________________?
A. Culture
B. Gram stain
C. Biochemical reaction
D. Haemagglutination test
cAMP reaction is shown by which streptococci ?
cAMP reaction is shown by which streptococci ?
A. Group A
B. Group B
C. Group C
D. Group D
Cough plate method is used to identify________________?
Cough plate method is used to identify________________?
A. Y. pestis
B. Pertussis
C. Mycoplasma
D. M-Tuberculosis
Test for differentiating virulent form non-virulent tubercular bacilli_____________?
Test for differentiating virulent form non-virulent tubercular bacilli_____________?
A. Aryl sulphatase test
B. Niacin test
C. Neutral red test
D. Catalase peroxidase test
The most common pathogens responsible for nosocomial pneumonias in the ICU are______________?
The most common pathogens responsible for nosocomial pneumonias in the ICU are______________?
A. Gram positive organisms
B. Gram negative organisms
C. Mycoplasma
D. Virus infections