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Exam Title : Bacteriology

Number Of Question : 55
Question #1: All of the following are true about brucella except:
B. abourtus is capnophilic
Transmisison by aerosol can occur occasionally
Pasteurizatin destroys it
2-Mercapto Ethanol agglutination test is used to detect Ig A
Question #2: A 10-year old child presented with severe sore throat and a grey pseudomembrane over pharynx and fonsils. The organism causing this infection is most likely
A gram positive bacillus
A gram negative bacillus
A catalase-positive gram positive coccus that grows in clusters
A single-stranded positive sense RNA virus
Question #3: The most common micro organism causing sub-acute bacterial endocarditis after oral surgical procedure is
Streptococcus viridans
Streptococcus muta
Staphylococcus aureus
Staphylococcus albus
Question #4: A child presents with recurrent episodes of sinopulmonary infection by bacteria with polysacharide rich capsules. Deficiency of which of the following immunoglobulim subclasses should be specifically investingated
IgA + IgG2
Question #5: A five year old child presents with pustular lesion on the lower leg. The culture from the lesion showed hemolytic gram positive coccii. Provisional diagnosis of Group A stretococcal pyoderma can be done by
Catalase positivity
Optochicin sensitivity
Bile solubility
Bacitracin sensitivity