ATI RN
mcgraw hill microbiology test bank Questions
Question 1 of 5
Which of the following viruses can cause hemorrhagic cystitis in immunocompromised patients:
Correct Answer: B
Rationale: The correct answer is B: BKV. BK virus can cause hemorrhagic cystitis in immunocompromised patients by infecting the urinary tract. It primarily affects the renal tubular epithelial cells, leading to hemorrhagic cystitis. EBV (A) causes infectious mononucleosis, HSV1 (C) causes oral and genital herpes, and JCV (D) causes progressive multifocal leukoencephalopathy, none of which are associated with hemorrhagic cystitis.
Question 2 of 5
The distinctive pattern of adenoviruses is due to;
Correct Answer: D
Rationale: The correct answer is D: Fibers at the vertices of the icosahedron. Adenoviruses have fibers at the vertices of the icosahedron, which give them their distinctive pattern. These fibers help in attaching to host cells. Choices A, B, and C are incorrect because adenoviruses do not have a lipid envelope, helical capsid, or ssDNA. Adenoviruses have a non-enveloped icosahedral capsid and contain dsDNA. This makes choice D the correct answer as it specifically relates to the unique structural feature of adenoviruses.
Question 3 of 5
Chemically an antigen may be:
Correct Answer: D
Rationale: The correct answer is D because antigens can be composed of lipids, proteins, or polysaccharides. Antigens are molecules that can elicit an immune response in the body. They can be diverse in their chemical composition, leading to the recognition and response by the immune system. Therefore, the correct choice is D as antigens can be any of these chemical components. Choices A, B, and C are incorrect because they each represent a possible chemical composition of antigens, but the flexibility of antigens to be made up of any of these components makes D the most accurate choice.
Question 4 of 5
Which one of all the clostridia that are associated with the disease myonecrosis/gas-gangrene can produce enterotoxin and could be responsible for the development of food intoxications:
Correct Answer: B
Rationale: The correct answer is B: Clostridium perfringens. This bacterium is associated with myonecrosis/gas gangrene and can produce enterotoxin causing food intoxication. Clostridium septicum (A) is associated with wound infections but not known for food intoxications. Clostridium histolyticum (C) is not typically associated with myonecrosis or food intoxications. Clostridium novyi (D) is known for causing black disease in sheep and cattle, not food intoxications.
Question 5 of 5
Fudrjant fern of injection is:
Correct Answer: A
Rationale: The correct answer is A: Continuous infection with long incubation period. Fudrjant fern of injection is a term used to describe an infection that is continuously present in the body after being introduced through injection. The long incubation period refers to the time between the injection and when symptoms of the infection become apparent. This choice is correct as it accurately describes the characteristics of fudrjant fern of injection. Choice B is incorrect because chronic infections typically have a long duration, not a short incubation period. Choice C is incorrect as immediate infections would not have a long incubation period. Choice D is incorrect because a 'sleeping' infection implies a dormant state, not continuous presence in the body as seen in fudrjant fern of injection.