Infection with which of the fo a. Listerie monocytogenes and hepatitis A virus b
ID: 302523 • Letter: I
Question
Infection with which of the fo a. Listerie monocytogenes and hepatitis A virus b. Mycobocterium tuberculosis and Piasmodium spp. c. Staphylococcus oureus and Streptococcus pyogenes d. Candida albicans (yeast) and Vibrio cholera 23. lowing intracellular microbes continues to be a major global health concerm? 24. Viruses are obligate intracellular parasites that may trieger both innate and adaptive immune responses aimed at eradicating the viral infection. Once infection is established, infected cells are eliminated by a. NK cells in the innate response and CTLs in the adaptive response b. Infected macrophages in the innate response and activated CD4 T cells in the adaptive response c. Only CTLs (adaptive response) can successfully eliminate virally infected cells d. Neutrophils in the innate response and NKT cells in the adaptive response 25. Generation of new influenza virus strains by genetic recombination or re-assortment is an example of a Antigenic shift b. Antigenic drift Molecular mimicry d. Conserved evolutionary transmission 26. Which of the following is/are true about parasitic infections? Most parasitic infections are chronic because of weak innate immunity and the ability of parasites to evade or resist elimination by adaptive immune responses a. b. Most parasitic infections are never chronic because of strong immunity results upon infection c. Are easily dealt with by the human body and require minimal intervention by the immune system d. Are successfully eliminated by phagocytes most of the time Which of the following are known mechanisms of immune system evasion by parasites? a. 27. Some helminthic parasites reside in intestinal lumens and are sheltered from cell-mediated immune effector mechanisms Protozoan parasites may conceal themselves from the immune system either by living inside host cells or by b. developing cysts that are resistant to immune effectors c. Some protozoan parasites may shed their antigenic coats, either spontaneously or after binding specific Ab d. All of the above The birth of immunology as a science dates back to 1796 when successful vaccination against smallpox first achieved by a. Edward Jenner b. Louis Pasteur 28. ?. James Phipps d. Robert Koch 29. The word "variolation" refers to: Inoculation of a human host with dry ground-up cowpox pustule preparation obtained from a cowpox infected person Inoculation of a human host with dry ground-up smallpox pustule preparation obtained from a small pox infected person Inoculation of a human host with dry ground-up smallpox pustule preparation a. b. c. obtained from the utter of a smallpox infected cow d. Inoculation of a human host with dry ground-up cowpox pustule preparation obtained from the utter of a cowpox infected cowExplanation / Answer
(23)b.myobacterium tuberculosis and plasmodium spp.
These organisms are responsible for Tuberculosis and malarial disease which are found in majority of the population of world.
(24)NK cells in the innate response and CTls in adaptive response.
(25)Antigenic shift
It is a process in which two viral strains are combined to produce a new viral strain.
(26)(a)most parasitic infections are chronic because of weak innate immunity and the ability of parasites to evade and resist elimination by adaptive immune responses.