The mechanism of genetic transfer where a phage serves as a vehicle is_______________?
(A) Transduction
(B) Translation
(C) Lysogeny
(D) Conjugation
Fimbriae are demonstrated by ___________________?
(A) Culture
(B) Gram stain
(C) Biochemical reaction
(D) Haemagglutination test
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
Phospholipid used to investigate syphilis by the reagin test is________________?
(A) Cardiolipin
(B) Plasminogen
(C) Palmityl lecithin
(D) Serine
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
The most frequently encountered clostridial 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