Topic 9: General features of virus multiplication

Question 1

What are the features?

Answer 1

1. Absorbtion
2. Penetration
3. Decapsidation
4. Eclipse
5. Maturation
6. Virus release

Question 2

What happens during Absorbtion?

Answer 2

Virus attaches to hoast

Question 3

What happens during Penetration?

Answer 3

Virus goes into the host

Question 4

What happens during decapsidation?

Answer 4

Virus releases NA

Question 5

What happens during eclipse?

Answer 5

Expresses genetic information

Question 6

What happens during Maturation?

Answer 6

Assemble irons and releases them from cell

-> NEW cells -> NEW cycle

Question 7

What are the stages of Virus release?

Answer 7

Passive or active
1. ) Non enveloped viruses -> Cytolysis
Rapid -> Picorna virus
Slow -> Parvovirus

2. Enveloped viruses -> Budding
   Rapid -> Toga virus
   Slow -> Arena virus
3. Alternative form of virus release:
   T-bacteriophages - Digest cell wall

Question 8

What is Log Phase?

Answer 8

Explosive increase in nr of cells