Viruses

VOCABULARY Virus, host, parasite, lytic cycle, lysogenic cycle, vector, droplet infection, vaccine, Koch's postulates, immunity, active immunity, passive immunity, retrovirus, HIV.

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[|Viruses - SAS audio inquiry # 1277] [|West Nile virus] [|How the flu virus attacks] [|Viruses among us] Questions you must be able to answer
 * 1) What is the basic structure of a virus?
 * 2) What does it mean when a virus is said to have mutated, and why is this advantageous?
 * 3) Which of the following diseases are caused by pathogenic agents called viruses: HIV, food poisoning, influenza, tetanus, smallpox, tuberculous, strep throat.
 * 4) What is a retrovirus?
 * 5) Can viral diseases be cured by antibiotics?