100_review_exam_3 - Biology 100 Human Biology Spring 2009...

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Biology 100 – Human Biology Spring 2009 REVIEW SHEET FOR EXAM #3 Disclaimer: You will be tested for your understanding of all material covered in lecture and on the following specific textbook pages : p. 124 (emerging viruses), p. 125 (Avian flu), p. 129 (inflammatory response), p. 139 (tissue rejection; disorders of the immune system), pp. 344-345 (origin and prevalence of HIV), pp. 346-347 (phases of HIV infection), pp. 350-351 (HIV treatment and potential vaccine). 1. For viruses: What is the basic structure of a virus? What determines which cell will be the host for a virus? Describe the “life cycle” of a typical virus. What is budding ? What is a common outcome for the host cell? What is a latent infection? Why are viral infections more difficult to treat than bacterial infections? 2. For the flu: which type of infectious agent is responsible? (is it a bacterium, fungus, protozoan, virus?) How is the flu spread, and how do the symptoms of the flu differ from those of a cold? When the flu is fatal, and what is the most common cause of death? What is the purpose of the flu shot? Does it always work? Why or why not? Why do we have a different flu shot each year? What are the difficulties in making a vaccine against influenza? (From lecture and text): Define emerging viruses . What are different explanations for how viruses emerge? What is avian (bird) flu? In order for there to be a bird flu epidemic in humans, what needs to happen? What are the possible ways that an avian flu strain could merge with a human flu strain? What would be the complications of having this “hybrid” virus? 3. What is hepatitis? … what are general symptoms? (In the context of this disease, what are some functions for the liver? What is bile? Where is it made, where does it work, what is its function? What is the function of the gallbladder? Under what circumstances might bile products end up in the bloodstream? What are the consequences if this happens? What is cirrhosis of the liver?) 4. For hepatitis A … what type of infectious agent is responsible? How is it transmitted? How likely is it for persons with hep A to become chronically infected? Is there any specific treatment? If a person has been exposed, is there any way to prevent getting symptoms? Is there a vaccine against hep A? 5.
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This note was uploaded on 10/16/2011 for the course BIOL 100 taught by Professor Dowdy during the Spring '08 term at S.F. State.

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100_review_exam_3 - Biology 100 Human Biology Spring 2009...

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