View images of and discuss various viral particle shapes and anatomy. Discuss adenoviruses and their affects on human disease. Define the two types of viral infections, lyric infections and lysogenic infections. Discuss how virus particles infect a host cell in general, by injection of their genetic material. View diagram images of lyric infections by Bacteriophage virus particles. Discuss the 6 steps which occur in the infection and why infection is called a lytic infection.