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WorksheetsGeneral properties of viruses
Total questions: 11
Worksheet time: 6mins
1. For all representatives kingdom Vira is characteristic the presence of the following main signs:
lack of cellular buildings;
the presence of only one type of nucleic acid;
the presence of a protein-synthesizing system;
disjunctive type reproductions;
the presence of a nucleoid.
2. Material intended for virological research preliminarily necessary:
treat with a solution of alkali;
treat with antibiotics;
warm up at a temperature 80 ° C for 20 min;
centrifuged.
9. Microscopy must be used to take into account the results of the following serological reactions:
a) ELISA;
ELISA;
NRCE; neutralization reaction with the cytopathic effect of plaque formation in cell culture.
HIR; Hemagglutination Inhibition Reaction
CFR; complement fixation reaction,
IFR; Immunofluorescence Reaction
To identify viruses, you can use:
HIR; Hemagglutination Inhibition Reaction
color test of Salk;
IFR; Immunofluorescence Reaction
RIT; reaction immobilization of treponema
neutralization reaction
For the simple structure of the virus characterized by the presence of:
capsid;
supercapsid;
capsomeres
peplomer.
For the difficult structure of the viruses characterized by the presence of:
capsid;
supercapsid;
capsomeres;
peplomer.
The capsid consists from morphological subunits which are:
polypeptides;
capsomeres;
polysaccharides;
ash sensors.
The classification of viruses is based on the following categories:
type of nucleic acid;
the size and morphology of virions;
tinctorial properties;
the presence of supercapsid;
antigenic properties.
The main types of cell cultures are:
primary;
secondary;
semi-transferable;
transferable.
Human leukocyte interferon is used for:
diagnosis of viral infections
level determination natural resistance in indirect hemagglutination reaction
treatment and emergency prevention of viral infections.
All representatives family Orthomixoviridae are:
complex viruses;
(-) RNA viruses;
do not have extrahuman reservoir;
pathogens of acute respiratory infections;
have a nucleocapsid spiral symmetry.
