Viruses Flashcards
0
Q
Viruses do not..
A
- grow
- have cells
- metabolize
- reproduce on their own
1
Q
Are viruses living organisms?
A
No.
2
Q
Viruses do..
A
Infect cells and use the cell to make more viruses
3
Q
What is a virus?
A
A virus is a small infectious agent that replicates only inside the living cells of other organisms.
4
Q
What does virus infect?
A
Viruses can infect all types of life forms, from animals and plants to bacteria and archaea.
5
Q
What are the domains?
A
Archaea, bacteria, eukarya
6
Q
What is the structure of a virus?
A
Viruses are composed of genetic material, either RNA or DNA, and a protective protein layer known as a capsid
7
Q
Explain viruses with RNA:
A
- HIV
- Influenca viruses
- Rabies
8
Q
Explain viruses with DNA:
A
- warts
- chicken pox
9
Q
What is the virus shape?
A
Helical, Polyhedral,
10
Q
How do viruses replicate?
A
- Lytic Cycle: virus enters cell replicates itself 100x then bursts out of the cell destroying it
- Lysogenic Cycle: virus DNA integrates with the host DNA and the hosts cell helps create more virus DNA. Environmental change can cause the virus to enter the Lytic cell
