Ow do viruses cause disease and Genetic Engineering

Part 1

How do viruses cause disease?

Course Objective:

a?Explain the significance of viral replication with respect to the disease process and the development of resistance to viral disease.a?

In Chapter 6, a?Questions to Consider,a? page 128 of your textbook is this question-

Bacteria can cause disease by using their toxins to interfere with important body processes, by overcoming body defenses (such as phagocytosis), by using their enzymes to digest tissue cells, or by other similar mechanisms. Most viruses, by contrast, do not encode toxins, cannot overcome body defenses, and produce no digestive enzymes. How, then, do viruses cause disease?

The Question for you to answer and discuss is:

How, then, do viruses cause disease?

Part 2:

I Am Legend

Course Objective:

a?Be aware of several limits and possibilities for future research in genetic engineering.a?

I Am Legend, a 1954 horror fiction novel by American writer Richard Matheson, has been adapted to numerous movies. The Last Man on Earth (1964) starred Vincent Price and The Omega Man (1971) starring Charlton Heston.

In the 2007 movie, I Am Legend (action taking place in 2012), U.S. Army virologist, Lieutenant Colonel Robert Neville (Will Smith) is left as one of the last healthy human in New York City. Three years earlier, Doctor Alice Krippin (Emma Thompson) had altered the measles virus through genetic manipulation. The virus when injected into cancer victims gives a 100% cure rate. The virus mutates into a lethal strain that spreads worldwide and kills 90% of the humans on earth. There are about 600 million survivors, 12 million people were naturally immune and the Darkseekerswho hunt the immune humans as prey.

A short clip from the movie Cure for Cancer has been found by Dr. Alice Krippin


The Question for you to answer and discuss is:

Do you think we should fear the genetic manipulation of virus, bacteria, and humans?