Viruses

Question 1

What is a virus ?

Answer 1

• sub microscopic entity
• capable of replicating only within living cells
• two key components are genome and protein coat

Question 2

Viral genomes can be :

Answer 2

• dna or rna
• single stranded or double stranded
• linear or circular
• single molecule or segmented
• single copy or multiple copies

Question 3

Historically viruses have been classified by :

Answer 3

• type of disease caused
• structure
  -biological properties
• morphology

Question 4

What is baltimore classification ?

Answer 4

• classification according to genome or replication

Question 5

Bacteriophage replication

Answer 5

• can be either lytic or lysogenic
• virulent phages replicate by lytic replication
• temp phages can have lytic and lysogenic stages

Question 6

How can viral infections be treated ?

Answer 6

• antivirals
• dna synthesis
• immunotherapies
• vaccines