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.Management Sciences
Category: Microbiology
An oxidase-positive, gram-negative rod which produces a bluish-green pigment has been grown in culture from a swab obtained from an infected burn wound. This organism is susceptible to gentamicin, ticarcillin and tobramicin, but resistant to all the other antibiotics which of the following organisms is it likely to be ?
A. Escherichia coli
B. Klebsiella pnemoniae
C. Proteus miribilis
D. Pseudomonas aeruginosa
Antibody to HSV will begin to appear_____________________?
A. in a week and reach a peak in 3 weeks
B. only after one year
C. no antibodies are present in primary HSV
D. antibodies are present in recurrent and chronic apthous stomatitis
Dorset’s egg medium is used for cultivation of______________?
A. Staphylococcus
B. Streptococcus
C. Gonococcus
D. Mycobacterium
Group A carbohydrate of Str. pyogenes cross reacts with human_________________?
A. Synovial fluid
B. Myocardium
C. Cardiac valves
D. Vascular intima
Post streptococcal acute glomerulo nephritis is an example of________________?
A. Type I hypersensitivity
B. Type II hypersensitivity
C. Type III hypersensitivity
D. Type IV hypersensitivity
Cough plate method is used to identify________________?
A. Y. pestis
B. Pertussis
C. Mycoplasma
D. M-Tuberculosis
The best method of sterilization of dressing powder is_____________?
A. Autoclaving
B. Hot air oven
C. Inspissation
D. Tyndallization
Mesophilic organisms are those that grow best at temperature of______________?
A. -20°C to -7°C
B. -7°C to + 20°C
C. 25°C to 40°C
D. 55°C to 80°C
All are true about bordetella pertussis except______________?
A. Most common cause is B. Petrussis
B. It may occur in children and young adult after vaccination
C. Bacteria culture from nasopharyngeal swab is the definitive diagnosis
D. Presence of antibodies in serum in diagnostic of the disease
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