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MIC 541-Exam 5-Virology 2
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What are the factors of susceptibility to viruses?
Number of receptors
ability of host to support virus
What type of measurement is Susceptibility?
Qualitative
What is the purpose of a capsid?
To stabilize and protect the genome
What type of environmental variations are capsids meant to protect against?
Temp
pH
Chemical
What viral structure protects against Temperature, pH and chemical composition of the environment?
Capsid
What is another word for the viral Nucleocapsid?
Core
What forms the substructure of a viral particle?
The nucleocapsid
Describe an icosahedral viral shape:
520 triangular surfaces
2,3, and 5 fold axes of symmetry
What type of virus has a Helical formation, as described in class?
Tobacco mosaic viruses
What is an example of an ovoid virus?
Poxvirus
Describe a Helical formation of a virus?
Cylindrical
What is a variation of the icosahedrical viral shape?
Fullerene cone
Describe the composition of viral envelope:
Lipid bilayer with glycoproteins
Where does the viral envelope reside?
Outermost layer
What are the advantages of a viral envelope?
Protects against chemicals and enzymes
What are the disadvantages of a viral envelope?
Less stable in the environment
How do viruses acquire membranes?
By budding out of host
What host membranes are viral membranes derived from?
Plasma membrane
ER
Golgi
Nuclear membrane
Viral envelope proteins are post-translationally targeted to what?
The appropriate membrane
How (generally) do viruses replicate?
Fusion and host cell entry
Replication
Assembly
Release
Maturation
What is the first step in Viral replication?
Viral binding to host cell
What is require for viral host cell binding?
Specific host cell receptors-protein
Lipids
Carbohydrates
Author
kyleannkelsey
ID
218387
Card Set
MIC 541-Exam 5-Virology 2
Description
MIC 541-Exam 5-Virology 2
Updated
2013-05-07T23:05:42Z
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