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Homework answers / question archive / University of Houston - BIOL 3332 1)Which of the following is NOT an exotoxin?     2

University of Houston - BIOL 3332 1)Which of the following is NOT an exotoxin?     2

Biology

University of Houston - BIOL 3332

1)Which of the following is NOT an exotoxin?

 

 

2. An obligate intracellular pathogen like Rickettsia compares to a facultative one like

Salmonella in that it_________

 

3. Foodborne pathogens likely use                                       as a portal of entry.

 

4. The bacterial pathogens Salmonella and Shigella can live either inside a host cell or independently of a host cell. Such pathogens are known as what?

 

5. A gene coding for                                    proteins is likely to be found in a genomic island of a pathogenic bacterial strain and NOT found in a nonpathogenic strain.

 

6. Extracellular pathogens can attempt to avoid immune detection by ___________________

 

7. Hosts differ in how susceptible they are to certain infections due to differences in _______________

 

8. Staphylococcus aureus uses a cell wall protein, protein A, to avoid immune detection. To which of the following does protein A bind to prevent phagocyte recognition of S. aureus?

 

9. A human obligate intracellular parasite can grow in phagolysosomes. From this information we can assume that this organism can grow in_____________

 

 

 

10. The mode of transmission for the M. tuberculosis pathogen is the_____________ route.

 

 

11. The portal of entry for M. tuberculosis is_________

 

12. The mode of transmission for the S. Typhi pathogen is the___________ route.

 

13. The portal of entry for S. Typhi is

 

14. The mode of transmission for the B. burgdorferi pathogen is the____________route. The portal of entry for B. burgdorferi is________.

 

15. Which of the following statements about virulence factors is true?

 

16. Which of the following is an example of vertical transmission?

 

17. How do phagocytes overcome the immune protection that the bacterial capsule gives to pathogens?

  1. They recognize bacterial cell-surface structures.
  2. They bind to C3b complement factor on the surface of the capsule.
  3. They release proteins that trigger apoptosis in the pathogen.
  4.  They bind to the Fc region of antibodies that opsonize the capsule.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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