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College Microbiology Questions

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College Microbiology
People with a weak immune system are more likely to develop active tuberculosis after an initial infection.
  1. True
  2. False
College Microbiology
A person with active tuberculosis can spread the disease through the air as he talks.
  1. True
  2. False
College Microbiology
               Thomas Brock                was responsible for the discovery of bacteria in boiling hot springs; and isolated Thermus aquaticus - source of Taq polymerase.
College Microbiology
                     Sergei Winogradsky                      was responsible for the concepts of chemolithotrophy and autotrophy.
College Microbiology
                 Ferdinand Cohn                  was the founder of “bacteriology,” and described spore formation in Bacillus.
College Microbiology
                                   Craig Venter and Hamilton Smith                                     were responsible for the first complete sequence of a bacterial genome
College Microbiology
                                   Selman Waksman and Albert Schatz                                    were responsible for the discovery of streptomycin in soil bacteria; and the foundation of modern pharmaceutical industry.
College Microbiology
                      Martinus Beijerinck                       was responsible for the enrichment culturing method and concept of a virus.
College Microbiology
Which of the following is true regarding the ABC system?
  1. It is driven by the energy in the proton motor force.
  2. Periplasmic binding proteins are involved, and energy comes from ATP.
  3. It involves chemical modification of the transported substance driven by phosphoenolpyruvate.
College Microbiology
What is sporulation?
  1. It is a response to environmental cues, specifically the presence of a suitable reproductive partner.
  2. It is a response to environmental cues, specifically the presence of a predator.
  3. It is a response to environmental cues, specifically nutrient limitation.
  4. It is the sexual reproduction of spores.
College Microbiology
Which of the following are "shapes" that prokaryotes may exhibit. (bonus: draw them and give 1 example of each)

1) Spirochaetes
2) Vibrio (bent rod)
3) Cocci (spheres)
4) Chains (strepto)
5) Tetrad (sarcina)
6) Appendaged/Budding
7) Filimentous
  1. 1, 2, 3, 4, 5
  2. 1, 2, 5, 6, 7
  3. 1, 2, 3, 4, 5, 6
  4. All are prokaryotic "shapes"
College Microbiology
Hepatitis is an inflammation of the liver usually caused by a viral infection.
  1. True
  2. False
College Microbiology
Haemophilus influenzae, is a motile Gram-negative pleomorphic rod-shaped bacterium.
  1. True
  2. False
College Microbiology
Explain how Vibrio cholerae causes cholera without apparent damage to the intestinal epithelium.
  1. This microbe causes destruction of the cellular structures underneath the intestinal epithelium-this is what induces the watery rice-stool characteristic of the illness. This leaves the overlying intestinal epithelium intact.
  2. This microbe directly invades the intestinal epithelial cells, but does not kill them. Instead, while multiplying inside them, it causes them to secrete large amounts of chloride ions. This induces water to follow by osmosis, resulting in the watery rice-stool characteristic of the illness.
  3. This microbe attaches to the surface of intestinal epithelial cells, secreting an exotoxin that causes the epithelium to secrete large amounts of chloride ions. This induces large amounts of water to follow by osmosis, resulting in the watery rice-stool characteristic of the illness.
  4. The inflammatory reaction to the presence of this microbe causes the watery rice-stool characteristic of the illness. Therefore, it's technically the immune response that initiates the disease, although this response is induced by the presence of the microbe on the intestinal epithelium.
College Microbiology
Diphtheria toxin works on                     .
  1. mitochondria
  2. chloroplasts
  3. lysosomes
  4. elongation factor 2.
College Microbiology
In 1876 this scientist provided proof that a bacterium causes anthrax and provided the experimental steps used to prove that a specific microbe causes a specific disease
  1. Robert Koch
  2. Francisco Redi
  3. Louis Pastuer
  4. Miguel Leonardo
College Microbiology
Which of the following are not main appendages of bacteria
  1. flagella
  2. pili
  3. fimbriae
  4. hair
College Microbiology
All of the following are sub-groups of microbiology except
  1. bacteriology
  2. mycology
  3. hematology
  4. virology
College Microbiology
Tuberculosis is spread by                                                      water droplets expelled by the infected individual                                                      when the person sings, talks, or even coughs.
College Microbiology
Which of these is true about drug resistant TB?
  1. Is caused by M. tuberculosis organisms that are resistant to at least one of the first line TB treatment drugs
  2. Can be transmitted from person to person or develop during TB treatment when the patient did not follow the treatment as prescribed
  3. Can be mono-resistant or poly-resistant
  4. All of the above.
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