Because viruses are obligate intracellular parasites, they cannot be grown on any inanimate traditional medium or a man-made nutrient medium. They require a dwelling host cell for replication. Contaminated host…
Think questions What is a virion? What is the difference between a virus and a virion? Why are viruses considered obligate intracellular pathogens? Describe three reasons why it is important…
Study questions (All topics) Fill in the blanks The component(s) of a virus that is/are extended from the envelope for attachment is/are the____________________ The envelope of a virus is derived…
Study questions for Topic 7-2 (The biology of replication of viruses) Think Questions Animal viruses adsorb to receptors on the cytoplasmic membrane of host cells. Why would our cells possess…
Study questions for Topic 5 (Classification of viruses) Short answer questions What viral properties are used to classify viruses? State what criteria are used in viral classification. List the seven…
Study questions for Topic 2 (Characteristics of viruses) State 2 living characteristics of viruses. State 3 non-living characteristics of viruses. List 3 criteria used to define a virus. A virus…
Study questions for Topic 12 (Epidemiology and Control of Viral Infections) Vaccines What is “herd immunity”? What is the difference between a passive vaccine and an active vaccine? Describe a…
Study questions for Topic 9 (Viral genetics and Evolution) Viral evolution What are the four main drivers of virus evolution? What is the error threshold? Is this concept an issue…
Study questions for Topic 8 (Viral infections and Pathogenesis) Persistent infections What is the difference between an acute infection and a persistent infection? Give one example of each type of…