Physical biological and chemical
The lytic cycle involves the reproduction of viruses using a host cell to manufacture more viruses; the viruses then burst out of the cell. The lysogenic cycle involves the incorporation of the viral genome into the host cell genome, infecting it from within.
All three scientists would most effectively demonstrate their concepts by using models.
Models are often used in science to provide a simplified visual representation of a certain phenomenon, making it easier to observe, understand and predict the possible future outcomes or effects of the demonstrated phenomena.
