viral classes and virus infection mechanisms - week 7 PBL

Question 1

Name of the classification system for viruses?

Answer 1

Baltimore

Order
Family
Subfamily
Type species
Morphology
Genetic material
Envelope

Question 2

6 stages of viruses infecting host cells?

Answer 2

Attachment
penetration
uncoating
replication
assembly
release

and repeat

Question 3

6 ways viruses can enter the host?

Answer 3

Oral
droplet
direct inoculation
direct skin contact
trans-placental
sexual transmission

Question 4

How do enveloped viruses continue infecting with the host?

Answer 4

These viruses = inserted into host cell membrane via glycoproteins

when new viruses are released, infected cell death not occur so continue shedding viral particles

Question 5

Example of a lytic infection?

Answer 5

influenza, polio

cells lysis allows virus release

Question 6

What is a latent infection plus examples?

Answer 6

an inactive virus, genetic material may be in host cytoplasm (herpes) or genome (retrovirus)

Question 7

How can and can’t you get shingles?

Answer 7

chicken pox virus can be reactivated in body causing shingles

cannot catch shingles from someone with chickenpox

can catch chickenpox from someone with shingles if not had chickenpox.

Question 8

Medication given for shingles?

Answer 8

Acyclovir within day 1 of shingles rash