Tuesday, March 2, 2010

Pg. 232-235 Questions 1-4

Question 1) List the steps an active virus follows when attacking a cell.
First, a virus attaches to a cell, then the virus's hereditary material enters the cell, the the material makes the cell make viral hereditary material and protein. After that, viruses form inside the cell, and the viruses release out of the cell.
Question 2) Compare and contrast a latent virus and an active virus. Give an example of each.
An active virus makes new cells, when a latent virus attaches to the hereditary material of the cell, when the cell divides, so does the virus. An active virus is chickenpox, when a latent virus is a cold sore.
Question 3) Explain how vaccines prevent infection.
Vaccines prevent infection because when you are immunized, the shot is actually the sickness itself, but at such a low amount you body builds interferons to be immune to the infection.
Question 4) Infer how some viruses might be helpful.
Some viruses might be helpful because, using gene therapy, doctors and scientists can replace defective heredity cells with the virus heredity cells, which might somehow lead to a cure for genetic disorders and cancer.

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