Virus application questions i answered

Virus application questions i answered -...

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PART 1: Viruses and their applications 1. Explain how knowledge about the structure of bacteriophages allowed Hershey and Chase to  determine the molecule responsible for heredity in their classic “blender” experiment.  Hershey and Chase knew that bacteriophages consist of only a protein shell containing  its genetic material, but they did not know which one was responsible for heredity. The group  infected by bacteriophages with radioactive phosphorus had the most radioactivity; the  radioactive protein hadn't entered the bacterial cells, but the DNA had. 2. Explain why viruses represent a gray area in terms of the distinction between living and non- living material. Viruses contain some structures that living organisms have. Viruses are composed of a  single strand of genetic information enclosed within a protein capsule. Yet, viruses lack most of  the internal structure and machinery such as the organelles to reproduce. 3. Explain why the properties of bacteriophages (  phage in particular) have made it a commonly λ   used tool of scientists in biotech research and genetic engineering. Bacteriophages are easy to manipulate and produce, so it is easier to observe results. Also,  bacteriophages are the most common organisms on Earth. 4. Explain why HIV and other retroviruses are so difficult to develop effective medicines for them. 
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This note was uploaded on 09/22/2010 for the course ABD. 39283 taught by Professor Dr.met during the Spring '10 term at Aachen University of Applied Sciences.

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Virus application questions i answered -...

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