Medical MCQs

5099 MCQs  (Page 183 of 510)

Function of Ig A is________________?
A. Acts as a mucosal barrier for infection
B. Circulating antibody
C. Kills virus infected cells
D. Activates macrophages
Most sensitive test for antigen detection is_______________?
A. Radioimmuno assay
B. Elisa
C. Immunoflourescence
D. Passive hemaglutination
Prozone phenomenon is due to______________?
A. Disproportionate antigen antibody levels
B. Excess antigen
C. Excess antibody
D. Hyper immune reaction
Dorset’s egg medium is used for cultivation of______________?
A. Staphylococcus
B. Streptococcus
C. Gonococcus
D. Mycobacterium
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
Flash pasteurization of milk is done at what temperature______________?
A. 125°c for new seconds
B. 60°c for 15 minutes
C. 72°c for 5 minutes
D. 72° for 15 – 20 sec