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- 40. Which of the following is not bacteriocidal? a. rifampin b. tetracycline c. lytic bacteriophages d. sulfa drugs combined with Trimethroprim e. b & d 41. All the following can help protect the host from bacterial infections EXCEPT a. the binding of iron b. increase in body temperature but not fever c. overall restriction of blood flow d. bathing e. eyelashes 42. Lysozyme is not found in a. tears b. saliva c. Sweat d. bacteriophages e. all the above contain lysozyme10. What can you do to decrease the spread of antibiotic-resistant bacteria? a. Never ask for antibiotics when you have a cold or the flu. b. When you are prescribed antibiotics, finish the entire prescribed amount. c. Avoid purchasing meat and poultry from sources known to use antibiotics. d. Wash hands often, especially before and after visiting a hospital. e. All of the above.17) Delta agent is characterised by: a. Infects patients who are HBcAg positive b. Is a DNA virus c. Is frequently found in the United States d. Usually replicates only in HBV-infected hosts
- 9. Define adherence of the bacterial disease process. Why is this step so important for bacterial infections? 10. List the four ways that bacteria evade or subvert the immune system during the Establishment and Surviving Host Defenses stage of the bacterial disease process. 11. Define exotoxins. How do exotoxins damage and destroy cells? Can exotoxins affect all cell types in the human body? Explain your answer. 12. Create (draw) a table to compare and contrast the following respiratory agents: Streptococcus pneumonia, Listeria monocytogenes, and Mycoplasma pneumoniae for the 5 steps of the bacterial disease process (portal of entry. adherence, establishment, invasiveness, and portal of exit) (3 points)24. The blood agar reaction above is caused by A. nucleases B. a type of AB toxin C. streptolysin D. superantigens E. endotoxins1. If a microorganism cannot be cultivated into pure culture, how will its pathogenicity be established in a host? (KOCH'S POSTULATE) a. What are the general factors that must interplay for disease to develop? b. Why are koch's postulate not useful in determining etiology of a viral disease?
- 33. A strain of Salmonella that is defective in SPI-2/T3S genes will fail to A. be taken up by the host cell B. survive in the blood stream C. produce toxins D. survive inside the host cell E. secrete flagella proteins 34. Which of the following cells (below) is known to produce antiphagocytic M protein? A. B. C. D. ●●●● E.93) Human intervention a. Like using antiviral to vaccinate individuals b. The dose of the vaccine can treat the disease c. Can increase the severity of the viral disease d. Like using antiviral to treat the viral disease7) The herpesviruses: a. Have three round of protein translation in its replication cycles, one before genome replication and two after genome replication b. Can have a persistent infection c. None
- Microbial resistance to drugs is acquired througha. conjugation.b. transformation.c. transduction.d. all of these.70. All of the following correctly describes a propagated or progressive source, EXCEPT:A. Disease continues to spread as long as the agent is presentB. Disease continues to spread as long as the vector is presentC. Down slope may be sharp if the common source is removedD. Infection easily spreads from person to person1. What is the genetic event/process that enables antibiotic resistance to occur?