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Chapter 2 & 13

MICROB 3200 Chapter Notes - Chapter 2 & 13: Bacteriostatic Agent, Gene Duplication, Reverse Transcriptase

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Michael Baldwin
2 & 13

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Medical Microbiology & Immunology Section I: Review Questions
Microbial Pathogenesis
1. Any microbe that is capable of causing disease in a human host has the same initial encounters
with the host’s system. Place these events in order, starting with the first contact between host
and microbe. (eBook: Ch 2.1 p.38)
(1) attachment
(2) immune avoidance
(3) obtaining nutrients
2. Influenza is a deadly disease because the damage influenza causes in lungs predisposes patients to
developing other infections, such as bacterial pneumonia. We describe the bacterial pneumonia as
a(n) __________ infection. (eBook: Ch 2.2 p.39)
3. Define acute infection, chronic infection, and latent infection. (eBook: Ch 2.2 p.39)
Acute infection: infection in which symptoms develop rapidly
Chronic infection: infection in which symptoms develop slowly and are resolved over
Latent infection: infection that persists after an acute illness; organisms are present, but
disease is not
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4. Circle all of the sources of indirect disease transmission shown in the infection cycle diagram.
(eBook: Ch 2.3 p.44-45)
5. Most infections go through a similar course of several stages that are characterized in this figure.
During which phases is the number of microbes present increasing faster than the immune
response to those microbes? (eBook: Ch 2.2 p.40-41)
Prodromal phase
Illness phase
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6. Label each of the areas in the figure below, describing the relative bacterial load and immune
activation during the course of an infectious disease. (eBook: Ch 2.2 p.40-41)
7. How do scientists describe a disease that is always present in a community? (eBook: Ch 2.3 p.47)
8. Which portal of entry is employed by organisms that are transmitted by flea or tick bite? (eBook:
Ch 2.4 p.50)
9. Pneumonia is an (1) ______ infection that appears quickly and is (2) ______ resolved.
Occasionally, pneumonia is a (3) ______ infection w/an initial infection site in the lungs. From
the lungs, (4) ______ travel to another area. From there, the infection travels through the
bloodstream, causing the infection to become a (5) ______ infection. (eBook: Ch 2.2 p.39)
(1) acute
(2) rapidly
(3) focal
(4) organisms
(5) disseminated
10. A farmer raises pigs, ducks, and cattle. One day, he notices that several ducks are sick. Shortly
thereafter, he notices that the pigs he had just purchased are also ill. The next week, the farmer
goes to an urgent care clinic with a serious case of influenza. Doctors’ tests find that the farmer
has an unusual strain of influenza virus that seems to be part avian influenza and part swine
influenza. What role did the pigs and ducks play in the transmission of the influenza virus?
(eBook: Ch 2.3 p.46,48)
11. When there is an outbreak of an infectious disease, such as SARS or Ebola virus, airports will
often screen potential passengers and not allow individuals with a fever to board an international
flight. They are looking for ___________ of infection. (eBook: Ch 2.2 p.40)
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