(Single Best Answer) Question 181: As compared to a routine case control study, nested case control study avoids problems (in study design) related to ?
A) Temporal association B) Confounding bias C) Need for long follow up D) Randomization Answer (Select an option above to get the answer):
A) Japanese Encephalitis B) Yellow fever C) Chikungunya fever D) Kyasanur Forest Disease Answer (Select an option above to get the answer):
(Single Best Answer) Question 183: An outbreak of streptococcal pharyngitis has occurred in a remote village. In order to carry out the epidemiological investigations of the outbreak it is necessary to perform the culture of the throat swab of the patients suffering from the disease. The transport media of choice would be ?
A) Salt mannitol media B) Pike's media C) Stuart's media D) Cary Blair media Answer (Select an option above to get the answer):
A) Nitrates in water B) Nitrites chlorine in water C) Free and combined chlorine in water D) Ammonia content in water Answer (Select an option above to get the answer):
A) Hemoglobin HbS differs from hemoglobin HbA by the substitution of Val for Glu in position 6 of the beta chain B) One altered peptide of Hb S migrates faster towards the cathode (-) than the corresponding peptide of HbA C) Binding of HbS to the deoxygenated HbA can extend the polymer and cause sickling of the red blood cells D) Lowering the concentration of deoxygenated Hb S can prevent sickling Answer (Select an option above to get the answer):
A) Native Poly Acrylamide Gel Electrophoresis (PAGE) B) Sodium Dodecyl Sulphate h-PAGE C) Isoelectric focusing D) Ion Exchange Chromatography Answer (Select an option above to get the answer):