7.1+viruses+JM

7.1 (p.122-124) and Avian Flu p. 125
 * Why are viruses not exactly living or nonliving?
 * because when they are outside a host, viruses are chemicals that can be stored. but when the opportunity occurs, the virus can replicate inside cells and appear live.
 * Give some examples of diseases caused by viruses.
 * cold, flus, chicken pox, polio, rabies, AIDS
 * What is the basic structure of a virus? (The two parts and their function)
 * the two parts are an outer capsid composed of protein units and an inner core of nucleic acid.
 * Why are viruses like microscopic pirates?
 * because they gain entry into and are specific to a particular host. and adhere to a lock-and-key manner with a receptor host.
 * Why are viruses considered parasites
 * Why are viruses considered OBLIGATE parasites?
 * because they can survive in certain environments.
 * Why do viruses ALWAYS cause disease?
 * because the virus is allowed to see a different vector to attack.
 * How do viruses "emerge" and "spread" each year? Give examples.
 * an example is the flu virus when it can to another country where in the past it wasn't.
 * What is a virus vector? Give examples,
 * a virus vector is
 * What is the relationship of bird flu to birds?
 * one bird will get the disease and will come in contact with other birds and the disease will spread.
 * How does bird flu infect humans?
 * the bird flu infects humans by coming in contact with the avian flu.
 * What is a pandemic? it is when on disease transfers to another virus
 * Why is there fear that bird flu could cause a pandemic?
 * because people are scarred that the bird flu will transfer over to humans
 * What action can we take to prevent a bird flu pandemic?
 * even though there are no vaccinations, scientists re trying to find one. also infected countries are trying to get ride of all the infected birds with the flu. they hope by eliminating the birds the will help stop the virus.
 * Why is there fear that bird flu could cause a pandemic?
 * because people are scarred that the bird flu will transfer over to humans
 * What action can we take to prevent a bird flu pandemic?
 * even though there are no vaccinations, scientists re trying to find one. also infected countries are trying to get ride of all the infected birds with the flu. they hope by eliminating the birds the will help stop the virus.