Homework 9 - What is a true pathogen and who does it typically

 Homework 9

Please use this document to take notes/draft your answers. Submit your final answers for grading to the “Homework 8 Final Answers” file to be graded. All answers must be in your own words. Answers copied directly from the textbook, PowerPoint, or an online source will not be given credit. Each question is worth 2 points.

1. What is a true pathogen and who does it typically infect? What is an opportunistic pathogen and who does it typically infect?

2. What is an infectious dose and what can it tell you about a microorganism? Would you develop an infection if you inhaled 1 Measles virus? Would you develop an infection if you ingested 1 Vibrio cholera bacterium?

3. What is a nosocomial infection? Explain why the urinary tract, lower respiratory tract, and surgical wounds are the most common sites of nosocomial infections? For full credit, give an explanation for all three sites.

4. The actions of the innate and adaptive branches of the immune system often overlap. Why do you think that there is so much redundancy of action and so many interacting aspects of the immune response?

5. Explain why you alternately feel cold and shiver followed by feeling hot and sweating when you have a fever. Be specific and describe the physiology of fever.

6. Describe what prompts a cell to produce interferon and the effects interferon has on the infected cell as well as surrounding cells.