MCB Tutorial Sheet 3: viruses

TUTORIAL SHEET 3: VIRUSES

1.      Define a virus.

2.      Define a virion.

3.      Using a well labelled diagram describe the structure of a virus.

4.      Outline the main properties that distinguish viruses from other living microorganisms.

5.      Explain the classification of Viruses based on

a.       Morphology of the viral particle

b.      Type of disease produced.

c.       Antigenic reaction

d.      Their nucleic acid and method of RNA transcription (chemical and physical properties)

6.      Describe the viral replication cycle.

7.      What are the cellular effects of viruses?