Are viruses dead or alive? How exactly do the different COVID-19 vaccinations work? This week, the grade 11 TOPS Biology Class delved deep into their viruses unit, where they learned about the life cycle of a virus, the importance of vaccination, and the various structural adaptations these particles have made in order to survive. And the end of the unit, they were able to take a look at different viruses under a microviewer, such as the influenza virus.