Textbook Chapter 1 Intro to Virology Flashcards
1
Q
a virus particle or virion consists of a nucleic acid genome enclosed in a what?
A
a protein coat and in some cases a lipid contain envelope
2
Q
what are the 3 things a virus depends on a cell for?
A
molecular building blocks, energy,m and the machinery for protein synthesis
3
Q
what can viral genomes be made of?
A
RNA or DNA
4
Q
How does a virus replicate?
A
- uncoating and expressing the viral genome inside the cell
- directing synthesis of viral proteins
- replicating the genome
- encapsidating it to form new progeny virus particles
5
Q
What are three ways viruses can be detected and enumerated?
A
- plaque assays
- hemagglutination assays
- electron microscopy
6
Q
how can the sequence of steps during virus replication be studied?
A
by infecting all cells in a culture at a high multiplicity of infection
7
Q
what is the baltimore classification system?
A
the seven different classes of virus that can be distinguished based on the pathway to synthesis of early mRNA’s
