Virus Flashcards
1
Q
What size can viruses be?
A
10 to 300 nm
2
Q
How many viruses roughly are there?
A
5,000
3
Q
How are viruses classified?
A
- Shape and size
- Type of nucleic acid
- Presence/ absence of an outer envelope
4
Q
How are viruses named?
A
-According to the host/tissue they live on rather than by binomial nomenclature.
5
Q
How are viruses identified?
A
The presence of DNA or RNA (they don’t have both)
6
Q
What are the functions of the protein coat?
A
- Protects during transmission
- Assists in binding to host’s membrane
- Typically with enzymes- viral function
7
Q
What may viruses also have?
A
May have a bilipid envelope- remnant of previously infected cells
8
Q
Give an example of a helical virus.
A
Tobacco mosaic virus
RNA molecule, protein subunit of coat
9
Q
Give an example of a enveloped virus.
A
HIV
Outer lipid envelope, viral proteins incorporated in envelope, viral RNA, core proteins
10
Q
What does HIV stand for?
A
Human Immunodeficiency Virus
