Deck 21: Microbial Diseases of the Skin and Eyes

Question 1

The etiologic agent of fever blisters.

A) Herpes simplex
B) Herpes zoster
C) HHV- 6
D) Parvovirus
E) Poxvirus

Answer 1

A

Question 2

The etiologic agent of chickenpox.

A) Herpes simplex
B) Herpes zoster
C) HHV- 6
D) Parvovirus
E) Poxvirus

Answer 2

B

Question 3

An 8- year- old female 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 8- year- old have?

A) Chickenpox
B) German measles
C) Fever blisters
D) Measles
E) Scabies

Answer 3

A

Question 4

Scabies is a skin disease caused by

A) A protozoan.
B) A prion.
C) A mite.
D) A slow virus.
E) A bacterium.

Question 5

Which of the following can be treated with topical chemotherapeutic agents?

A) Sporotrichosis
B) Dermatomycosis
C) Rubella
D) Herpes gladiatorium
E) None of the above

Question 6

Which of the following is not a causative agent of conjunctivitis?

A) Neisseria gonorrhoeae
B) Chlamydia trachomatis
C) Adenovirus
D) Hemophilus aegyptii
E) Herpes simplex

Question 7

Which of the following is not normal microbiota of the skin?

A) Pityrosporum
B) Staphylococcus
C) Corynebacterium
D) Propionibacterium
E) Streptococcus

Question 8

All of the following statements about congenital rubella syndrome are true except

A) It doesn't occur with subclinical infections.
B) It may result in deafness, blindness, and mental retardation.
C) It may be fatal.
D) It is contracted in utero.
E) All of the above are true.

Question 9

Which of the following is not a cause of ringworm?

A) Trichophyton
B) Microsporum
C) Epidermophyton
D) Tinea capitis
E) None of the above

Question 10

The patient has a papular rash. Microscopic examination of skin scrapings reveals small 8- legged animals.

A) Candida
B) Microsporum
C) Scabies
D) S. aureus
E) P. aeruginosa

Question 11

The etiologic agent of roseola.

A) Herpes simplex
B) Herpes zoster
C) HHV- 6
D) Parvovirus
E) Poxvirus

Question 12

A patient has pus- filled vesicles and scabs on her face, throat, and lower back. She most likely has

A) Measles.
B) Smallpox.
C) Chickenpox.
D) Rubella.
E) Mumps.

Question 13

The patient has vesicles and scabs over her forehead. Microscopic examination of skin scrapings shows gram- positive cocci in clusters.

A) Candida
B) Scabies
C) Microsporum
D) P. aeruginosa
E) S. aureus

Question 14

Which of the following is not transmitted by the respiratory route?

A) Cold sore
B) Smallpox
C) Chickenpox
D) German measles
E) None of the above

Question 15

Newborns' eyes are treated with an antibiotic when

A) N. gonorrhoeae is isolated from the eyes.
B) Always.
C) The mother has genital herpes.
D) The mother has gonorrhea.
E) The mother is blind.

Question 16

A 17- year- old male has pus- filled cysts on his face and upper back. Microscopic examination reveals gram- positive rods. This infection is caused by

A) Propionibacterium acnes.
B) Acanthamoeba.
C) Streptococcus pyogenes.
D) Staphylococcus aureus.
E) Herpes simplex virus.

Question 17

Which region of the skin supports the largest bacterial population?

A) Forearms
B) Axilla
C) Legs
D) Scalp
E) All are equal

Question 18

Thrush and vaginitis are caused by

A) Herpesvirus.
B) Streptococcus pyogenes.
C) Chlamydia trachomatis.
D) Candida albicans.
E) Staphylococcus aureus.

Question 19

Which of the following is not a characteristic used to identify S. pyogenes?

A) Group M proteins
B) Group A cell wall antigen
C) Beta- hemolytic
D) Coagulase- positive
E) None of the above

Question 20

Vaccination for rubella is

A) Not necessary if a person has had an infection.
B) Recommended only for pregnant women.
C) Recommended for newborns to prevent congenital disease.
D) Not necessary because the disease is mild.
E) None of the above.

Question 21

Scabies is transmitted by

A) Water.
B) Fomites.
C) Soil.
D) Food.
E) None of the above.

Question 22

Which infection is caused by S. aureus?

A) Furuncle
B) Sty
C) Pimples
D) Carbuncle
E) All of the above

Question 23

The greatest single cause of blindness in the world is

A) Inclusion conjunctivitis.
B) Neonatal gonorrheal ophthalmia.
C) Trachoma.
D) Keratoconjunctivitis.
E) Pinkeye.

Question 24

In which of the following respects is measles similar to German measles?

A) Rash
B) Etiologic agent
C) Congenital complications
D) Encephalitis as a complication
E) In name only

Question 25

Which of the following is not a characteristic of P. aeruginosa?

A) Oxidase positive
B) Produce pyocyanin
C) Oxidative metabolism
D) Gram- positive rods
E) None of the above

Question 26

Which of the following pairs is mismatched?

A) P. acnes - acne
B) P. aeruginosa - otitis externa
C) S. pyogenes - erysipelas
D) S. aureus - impetigo
E) None of the above

Question 27

A possible complication of herpetic keratitis is

A) Encephalitis.
B) Subacute sclerosing panencephalitis.
C) Fever blisters.
D) Congenital rubella syndrome.
E) None of the above.

Question 28

Assume that your lab partner swabs the side of his face and used 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) A coagulase reaction.
B) An acid- fast reaction.
C) Conidiospores.
D) Pseudopods.
E) Pseudohyphae.

Question 29

A 35- year- old female 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) Varicella- zoster virus.
B) Staphylococcus aureus.
C) Herpes simplex virus.
D) Streptococcus pyogenes.
E) Candida albicans.

Question 30

Which of the following is incorrectly matched?

A) Infected tissue fluoresces - Dermatomycosis
B) Chickenpox - Poxvirus
C) Conjunctivitis - Pseudomonas
D) Opportunistic infection in AIDS patients - Candidiasis
E) Conjunctivitis - Chlamydia trachomatis

Question 31

A 45- year- old male 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) Candida albicans.
E) Streptococcus pyogenes.

Question 32

A 17- year- old male has pus- filled cysts on his face and upper back. Microscopic examination reveals gram- positive rods. This infection is

A) Impetigo.
B) Boils.
C) Acne.
D) Carbuncles.
E) Pimples.

Question 33

Used to treat smallpox.

A) Penicillin
B) Sulfonamide
C) Trifluridine
D) Fungicide
E) None of the above

Question 34

Cytoplasmic inclusions were observed in a fetus that died in utero after 6 months' gestation. The probable cause of the fetus's death was

A) Herpes simplex.
B) Streptococcus pyogenes.
C) Fifth disease.
D) Staphylococcus aureus.
E) Measles.

Question 35

Used to treat epidemic herpetic keratitis.

A) Penicillin
B) Fungicide
C) Sulfonamide
D) Trifluridine
E) None of the above

Question 36

Used to treat sporotrichosis.

A) Penicillin
B) Sulfonamide
C) Trifluridine
D) Fungicide
E) None of the above

Question 37

The patient has scaling skin on his fingers. Conidiospores are seen in microscopic examination of skin scrapings.

A) P. aaeruginosa
B) Microsporum
C) Candida
D) Scabies
E) S. aureus

Question 38

Which of the following is sensitive to penicillin?

A) Candida
B) Herpesvirus
C) Pseudomonas
D) Streptococcus
E) Chlamydia

Question 39

The etiologic agent of warts is

A) Poxvirus.
B) Herpesvirus.
C) Parvovirus
D) Papovavirus.
E) None of the above.

Question 40

Which of the following pairs is mismatched?

A) Pustular rash - smallpox
B) Koplik spots - rubella
C) Vesicular rash - chickenpox
D) Papular rash - measles
E) None of the above

Question 41

Which of these is not caused by herpesvirus?

A) Keratoconjunctivitis
B) Chickenpox
C) Smallpox
D) Shingles
E) None of the above

Question 42

Used to treat candidiasis.

A) Penicillin
B) Sulfonamide
C) Trifluridine
D) Fungicide
E) None of the above

Question 43

Herpes gladiatorium is transmitted by

A) Insect bites.
B) The fecal- oral route.
C) The respiratory route.
D) Direct contact.
E) All of the above.

Question 44

Which of the following leads to all the others?

A) Staphylococcal infection
B) Sudden drop in blood pressure
C) Toxemia
D) Scalded skin syndrome
E) TSST- 1

Question 45

The etiologic agent of fifth disease.

A) Herpes simplex
B) Herpes zoster
C) HHV- 6
D) Parvovirus
E) Poxvirus