Chapter 21 MULTIPLE CHOICE Choose the one alternative that best completes the statement or answers the question 1 Which of the following cause s ringworm A Microsporum B Epidermophyton C Mycobacterium D Microsporum and Epidermophyton E Microsporum Epidermophyton and Mycobacterium Answer D 2 Which of the following are incorrectly matched A HHV 6 roseola B parvovirus fifth disease C varicella zoster chickenpox D herpes zoster shingles E poxvirus fever blisters Answer E 3 All of the following are normal microbiota of the skin EXCEPT A Staphylococcus B Propionibacterium C Streptococcus D Corynebacterium E Micrococcus Answer C 4 A possible complication of chickenpox is A encephalitis B macular rash C subacute sclerosing panencephalitis D fever blisters E congenital rubella syndrome Answer A 5 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 A herpes simplex virus B Staphylococcus aureus C varicella zoster virus D Streptococcus pyogenes E Candida albicans Answer C 1 6 All of the following are protective factors of the skin and its secretions EXCEPT A pyocyanin production B lysozyme production C keratin D salt E tightly packed cells Answer A 7 An eight year old girl has scabs and pus filled vesicles on her face and throat Three weeks earlier she had visited her grandmother who had shingles What infection does the eight year old have A chickenpox B measles C rubella D scabies E fever blisters Answer A 8 Buruli ulcer is caused by A gram positive bacteria B a virus C acid fast bacteria D a fungus E a mite Answer C 9 All of the following are causative agents of conjunctivitis EXCEPT A Haemophilus influenzae B Neisseria gonorrhoeae C adenovirus D Chlamydia trachomatis E herpes simplex Answer E 10 A patient has pus filled vesicles and scabs on her face throat and lower back She most likely has A rubella B mumps C chickenpox D measles E smallpox Answer C 11 All of the following are transmitted via the respiratory route EXCEPT A measles B rubella C smallpox D chickenpox E tinea Answer E 2 12 Which of the following is used to treat shingles A acyclovir B trifluridine C penicillin D sulfonamide E fungicide Answer C 13 The patient has a papular rash Microscopic examination of skin scrapings reveals small eight legged animals The etiology is A Staphylococcus aureus B Pseudomonas aeruginosa C Candida D Sarcoptes E Microsporum Answer D 14 Why is vaccination for rubella recommended A Health care workers have a high incidence of infection B It has a high mortality rate in school age children C Death from secondary infections is common D There is a high incidence of congenital infections and birth defects E It is no longer recommended rubella has been eradicated Answer D 15 Which of the following is a subcutaneous mycosis A tinea capitis B sporotrichosis C erysipelas D Buruli ulcer E athlete s foot Answer B 16 Which of the following statements about congenital rubella syndrome is FALSE A It can be prevented by vaccinating women prior to pregnancy B It may be fatal to the unborn child C It may result in deafness blindness and mental retardation D It is contracted during the first trimester of pregnancy E It does not occur with subclinical infections Answer E 17 Exfoliative toxin is responsible for A thrush B scalded skin syndrome C impetigo D fever blisters E otitis externa Answer B 3 18 The greatest single cause of blindness in the world is A trachoma B neonatal gonorrheal ophthalmia C inclusion conjunctivitis D pinkeye E keratoconjunctivitis Answer A 19 Which of the following is used to treat sporotrichosis A trifluridine B sulfonamide C potassium iodide D penicillin E acyclovir Answer C 20 All of the following are characteristic of the Group A beta hemolytic streptococci EXCEPT A the ability to damage cell membranes B the ability to dissolve blood clots C hyaluronidase production D M proteins E methicillin resistance Answer E 21 Warts are caused by A poxvirus B herpesvirus C Staphylococcus aureus D papillomavirus E parvovirus Answer D 22 Which of the following is NOT caused by HSV 1 A herpes gladiatorum B cold sores C herpes whitlow D herpes encephalitis E canker sores Answer E 23 Thrush and vaginitis are caused by A Staphylococcus aureus B Candida albicans C Chlamydia trachomatis D herpesvirus E Streptococcus pyogenes Answer B 4 24 All of the following are characteristic of Pseudomonas aeruginosa EXCEPT A rod shaped B production of pyocyanin C gram positive cell wall D resistance to many types of disinfectants and antibiotics E growth in moist environments Answer C 25 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 A Candida albicans B herpes simplex virus C Streptococcus pyogenes D Staphylococcus aureus E varicella zoster virus Answer A 26 Staphylococcus aureus is responsible for all of the following EXCEPT A pimples B acne C carbuncles D boils E sties Answer B 27 The patient has vesicles and scabs over her forehead Microscopic examination of skin scrapings shows gram positive cocci in clusters The etiology is A Staphylococcus aureus B Microsporum C Candida D Sarcoptes E Pseudomonas aeruginosa Answer A 28 Which of the following pairs is mismatched A keratitis Acanthamoeba B conjunctivitis Chlamydia trachomatis C otitis externa Pseudomonas D chickenpox poxvirus E Buruli ulcer Mycobacterium Answer D 29 The patient has scaling skin on his fingers Conidiospores are seen in microscopic examination of skin scrapings The etiology is A Pseudomonas aeruginosa B Microsporum C Staphylococcus aureus D Mycobacterium ulcerans E Candida Answer B 5 30 Which of the following is likely to spread MRSA among athletes A whirlpool baths B taping gels C shared equipment D physical contact E All of the answers are correct Answer E 31 A 17 year old boy has pus filled cysts on his face and upper back Microscopic examination reveals gram positive rods This infection is caused by A herpes simplex virus B Propionibacterium acnes C Acanthamoeba D Streptococcus pyogenes E Staphylococcus aureus Answer B 32 Assume that your lab partner swabs the side of his face and uses the swab to inoculate a nutrient agar plate The next day he performs a Gram stain on the colonies They are gram positive cocci You advise him that he should next look for A pseudopods B conidiospores C