Biol 251 MasteringMicrobiology Chapter 21 – Flashcards
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The varicella-zoster virus is the causative agent of chickenpox and shingles.
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True
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Candidiasis often occurs following antibiotic therapy for bacterial infections.
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True
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The abbreviation "GAS" refers to pathogenic strains of Staphylococcus.
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False
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The majority of the staphylococci isolated from human skin are coagulase-positive.
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False
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Which of the following pairs is mismatched? conjunctivitis Chlamydia trachomatis otitis externa - Pseudomonas chickenpox poxvirus Buruli ulcer Mycobacterium keratitis Acanthamoeba
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chickenpox poxvirus
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A 35-year-old woman has a red, raised rash on the inside of her thighs. Gram-stained skin scrapings show large budding cells with pseudohyphae. The infection is caused by
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Candida albicans.
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A 45-year-old man has pus-filled vesicles distributed over his back in the upper right quadrant, over his right shoulder, and upper right quadrant of his chest. His symptoms are most likely due to
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varicella-zoster virus.
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A patient has pus-filled vesicles and scabs on her face, throat, and lower back. She most likely has
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chickenpox
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Scabies is a skin disease caused by a
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mite
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Which of the following is used to treat shingles? trifluridine fungicide penicillin sulfonamide acyclovir
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acyclovir
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Which of the following statements about congenital rubella syndrome is FALSE? It may result in deafness, blindness, and mental retardation. It is contracted during the first trimester of pregnancy. It may be fatal to the unborn child. It does not occur with subclinical infections. It can be prevented by vaccinating women prior to pregnancy.
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It does not occur with subclinical infections.
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Why is vaccination for rubella recommended?
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There is a high incidence of congenital infections and birth defects.
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In which of the following respects is measles similar to German measles (rubella)?
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They can be controlled by vaccination.
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Staphylococcus aureus is responsible for all of the following EXCEPT acne. boils. pimples. carbuncles. sties.
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acne
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All of the following are characteristic of the Group A beta-hemolytic streptococci EXCEPT hyaluronidase production. methicillin resistance. the ability to damage cell membranes. the ability to dissolve blood clots. M proteins.
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methicillin resistance.
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Thrush and vaginitis are caused by
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Candida albicans.
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Warts are caused by
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papillomavirus
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Which of the following are incorrectly matched? herpes zoster shingles HHV-6 roseola parvovirus fifth disease poxvirus fever blisters varicella-zoster chickenpox
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poxvirus fever blisters
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All of the following are normal microbiota of the skin EXCEPT Propionibacterium. Streptococcus. Micrococcus. Corynebacterium. Staphylococcus.
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Streptococcus.
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Which region of the skin supports the largest bacterial population? feet scalp armpits forearms
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armpits
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A possible complication of chickenpox is
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encephalitis
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