English > EXAM > ENG 102;test_3 - Chapter 26 Body defence mechanisms.With all complete solutions. (All)

ENG 102;test_3 - Chapter 26 Body defence mechanisms.With all complete solutions.

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1 Some viruses cause damage to specific types of human cells only because (1) the viruses can attach to receptors on the cell membrane of these host cells only. (2) non-host cells cannot synthesize ... proteins to form new viruses. (3) non-host cells can produce a chemical that kills the viruses. A (1) only B (3) only C (2) and (3) only D (1), (2) and (3) 2 Which of the following are suitable for making a vaccine? (1) live and active pathogens (2) weakened pathogens (3) parts of pathogens A (1) and (2) only B (1) and (3) only C (2) and (3) only D (1), (2) and (3) 3 Which of the following is/are chemical barriers in body defence? (1) sebum (2) mucus (3) saliva A (1) only B (1) and (3) only C (2) and (3) only D (1), (2) and (3) 4 Which of the following comparisons between vaccines and antibiotics is correct? Vaccines Antibiotics A provide active immunity provide passive immunity B used to prevent diseases used to cure diseases C prepared from pathogens produced by activated B cells D cannot be taken orally can be taken orally  Oxford University Press 2010 - 56 - This study source was downloaded by 100000823250788 from CourseHero.com on 05-09-2021 02:07:33 GMT -05:00 https://www.coursehero.com/file/13604863/test-3-ch26-e/ This study resource was shared via CourseHero.com New Senior Secondary Mastering Biology – Chapter test 26　Body defence mechanisms 5 An inflammatory response involves (1) an increase in the permeability of the capillaries in the infected area. (2) an increase in blood flow to the infected area. (3) constriction of arterioles in the infected area. A (1) only B (1) and (2) only C (2) and (3) only D (1), (2) and (3) 6 A person who has recovered from measles is unlikely to be attacked by measles again but a person may suffer from influenza several times in a month because A influenza viruses cannot start off the specific defence mechanisms of the body. B influenza viruses can only start off the HIR but not the CMIR. C influenza viruses can only start off the CMIR but not the HIR. D influenza viruses mutate much more rapidly than measles viruses. Directions: Questions 7 to 9 refer to the news report below. Researchers will extract some proteins in the blood and inject them into human swine flu patients to see if these proteins are useful in curing the disease. Besides an effective treatment, researchers are also running with time for a preventive measure before the peak season of human swine flu arrives in winter. 7 What proteins would be extracted from the donated blood in the research? (1) human swine flu antigens (2) human swine flu antibodies (3) memory B cells and memory T cells for human swine flu A (1) only B (2) only C (2) and (3) only D (1) and (3) only 8 Injecting the proteins extracted from the donated blood into human swine flu patients provide A an active and natural immunity. B an active and artificial immunity. C a passive and natural immunity. D a passive and artificial immunity. [Show More]

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