Question 23 (Mandatory) (1 point) Identify the bacteria capable of producing toxins. There are two correct responses. Select 2 correct answer(s) Question 23 options: Rabies virus Poliovirus C. tetani C. botulinum
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- Rabies virus and Poliovirus are viruses, not bacteria. - C. tetani and C. botulinum are bacteria. Show more…
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Match the bacterial toxin to its mechanism of action. 1. inhibits muscle relaxation 2. activates adenylate cyclase, resulting in higher levels of cAMP and loss of electrolytes leading to diarrhea 3. inhibits release of acetylcholine to inhibit muscle contraction 4. inhibits host cell protein synthesis which kills epithelial cells 1. botulinum 2. cholera 3. diphtheria 4. tetanus Match the correct bacterial exotoxin group with the target pathology. 1. GI epithelium 2. epithelial cells of the skin or mucosal membranes 3. red blood cells 4. hyperstimulates T cells 1. hemotoxin 2. enterotoxins 3. cytotoxins 4. supertoxin or superantigen In which condition does metabolic waste produced by bacteria contribute to pathology? 1. toxic shock 2. diphtheria 3. necrotizing fasciitis 4. gas gangrene
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Q4. MCQs (4M) 1. DPT vaccine gives protection against all of the following except: a. Corynebacterium diphtheriae b. Clostridium tetani c. Listeria monocytogenes d. Whooping cough bacteria e. None of these 2. Which of the following is incorrect about B. anthracis? a. Causing anthrax. b. Transferred cutaneously, inhalation, or by ingestion. c. Its virulence factors include a number of exotoxins and the capsule. d. Its toxins are edema Factor, lethal Factor, protective Antigen acts individually. e. Diagnosed by polychrome methylene blue Q5. Which of the following bacteria is more pathogenic to humans, and why? a. E. coli b. S. typhi
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Which of the following organisms could not produce an exotoxin? Select one: Escherichia coli Staphylococcus aureus Clostridium botulinum Ebola virus All of the above could produce an exotoxin
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