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WorksheetsMyxoviruses
Total questions: 13
Worksheet time: 13mins
Hemadsorption occurs at __________ (Temp.) and detachment at ________ (Temp.)
Function of Neuraminidase
Mediates hemadsorption
Meditates hemagglutination
Causes elution of cells adsorbed to virions
Degrades mucus layer of respiratory tract
Which of the following does Influenza virus have ?
ss -ve sense RNA
ds DNA
ss +ve sense RNA
ss RNA diploid
Choose the group specific antigens in the following
M1, M2 & M3
RNP
HA & NA
NS1 and NS2
Changes in all antigenic sites of HA, resulting in a comletely different strain. What does this phenomenon result in?
Antigenic drift
Antigenic shift
Antigenic reassortment
Genetic drift
Does Influenza C cause human pandemics and epidemics?
Yes
No
Does viremia occur in influenza patients?
YES
NO
YES, only primary viremia occurs
Not known
What is the prominent symptom in case of influenza virus?
Virus can be recovered in respiratory secretions for how many days?
4-10 days
3-4 says
3-8 days
7-12 days
Which of the following Abs are common in LRT secretions?
IgM
IgA
IgE
Secretory IgG
Choose all the specimens that can be taken from influenza patients.
Nasal/throat washings
Nasopharyngeal swabs
Sputum
Bronchial washings
Whihc of the follwoing viruses have HA and NA?
Orthomyxoviruses
Measles virus
Parainfluenza virus
All Paramyxoviruses
Multinucleated giant cell formation in HPIV infected patients is mediated by
P and L proteins
HA protein
HA and NA proteins
F protein
