Viruses: focus on their chemistry, physiology and their roles in human disease.

Viruses: focus on their chemistry, physiology and their roles in human disease. A. What are the chemical/structural characteristics of viruses? How does a virus infect a cell? How do viruses proliferate? What are retroviruses and why are they important? What are the roles of viruses in human disease? B. Marburg virus. describe what is currently known about its chemical characteristics, specificity, transmission and treatment. Include a list of references.