Viruses

Virus classification

viruses
2.1.i Classification of viruses

Retrovirus - HIV

Negative ssRNA - Measles

Positive ssRNA - Ebola

Virus life cycle - Lytic & Latent Cycles.

2.2.ii Reproduction of viruses

NB - The term Latent (hidden) and Lysogenic essentially mean the same thing. The Edexcel specification refers to the Latent cycle.

Bacteriophage - DNA Virus

Epidemics

2.2.v drugs during epidemics