Question 1

Occassionally,Staphylococcus epidermidis may be isolated from the eye.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following is the causative agent of tinea versicolor?

Accepted Answer

A)  Malassezia furfur
B)  Trichophyton
C)  Microsporum
D)  EpidermophytonE) A) and B)
F) C) and D)

Question 3

You had surgery on your shoulder,as a result of rotator cuff injury.The surgery went well,but when the cut area was sutured,bacteria entered into the open tissue.As a result,you now have an infection of deep tissue exhibiting redness,swelling,pain,fever,and a rash.Having taken microbiology,you would predict that you have a developed an infection caused by:

Accepted Answer

A)  E.coli
B)  varicella-zoster
C)  Staphylococcus
D)  NeisseriaE) B) and C)
F) C) and D)

Question 4

The enzyme that coagulates plasma is

Accepted Answer

A)  catalase.
B)  coagulase.
C)  hyaluronidase.
D)  staphylokinase.
E)  kinase.F) B) and C)
G) A) and B)

Question 5

Which microorganism species is most well-adapted to life on the skin?

Accepted Answer

A)  Streptococcus pyogenes
B)  Corynebacterium diphtheriae
C)  Staphylococcus epidermidis
D)  Malassezia
E)  Candida albicansF) All of the above
G) B) and E)

Question 6

Blood vessels are found in the

Accepted Answer

A)  stratum corneum.
B)  dermis.
C)  stratum basale.
D)  subcutaneous layer.
E)  dermis and subcutaneous layer.F) B) and E)
G) B) and C)

Question 7

Acne can be prevented with antibiotics.

Accepted Answer

A) True 
 B)False

Question 8

Transmission of tineas include

Accepted Answer

A)  human to human.
B)  animal to human.
C)  soil to human.
D)  fomites to human.
E)  All of the choices are correct.F) C) and D)
G) A) and C)

Question 9

Which of the following is not true of cellulitis?

Accepted Answer

A)  caused by S.aureus or S.pyogenes
B)  occurs in the epidermis
C)  causes pain,tenderness,swelling,and warmth
D)  lymphangitis may occur
E)  treated with cephalexinF) B) and C)
G) A) and D)

Question 10

The main causative agent of gas gangrene is

Accepted Answer

A)  Staphylococcus aureus.
B)  Streptococcus pyogenes.
C)  Mycobacterium leprae.
D)  Staphylococcus epidermidis.
E)  Clostridium perfringens.F) B) and C)
G) A) and B)

Question 11

All staphylococci can be differentiated from all streptococci because only staphylococci produce the enzyme _____ that is easily detected in the lab.

Accepted Answer

A)  staphlokinase
B)  exfoliative toxin A
C)  exfoliative toxin B
D)  catalase
E)  lactaseF) B) and C)
G) B) and E)

Question 12

Infections caused by Staphylococcus aureus include all of the following except

Accepted Answer

A)  meningitis.
B)  furuncles and carbuncles.
C)  impetigo.
D)  scalded skin syndrome.
E)  acne.F) A) and B)
G) A) and C)

Question 13

The disease pathogenesis seen in River blindness is caused by

Accepted Answer

A)  Wolbachia bacteria.
B)  Onchocera volulus worms.
C)  a blood fluke.
D)  herpes simplex virus.
E)  Both Wolbachia bacteria and Onchocera volulus worms are correct.F) A) and C)
G) D) and E)

Question 14

Which is incorrect about warts?

Accepted Answer

A)  caused by human papillomaviruses (HPV) 
B)  are transmitted by direct contact or fomites
C)  include deep plantar warts on soles of the feet
D)  are frequently cancerous
E)  freezing and laser surgery can be used for removalF) None of the above
G) A) and D)

Question 15

Oral lesions called Koplik's spots are seen in patients with

Accepted Answer

A)  croup.
B)  mumps.
C)  influenza.
D)  measles (rubeola) .
E)  rubella.F) C) and D)
G) B) and E)

Question 16

Chickenpox

Accepted Answer

A)  is transmitted by inhalation of respiratory secretions.
B)  is transmitted by skin lesion contact or airborne spread of lesion material.
C)  has an incubation of 10 to 20 days.
D)  has fever and vesicular rash that occurs in successive crops.
E)  All of the choices are correct.F) C) and D)
G) D) and E)

Question 17

Understanding about the defenses of the eye,you would predict that a person __________ would have a higher rate of eye infections.

Accepted Answer

A)  having a vitamin deficiency
B)  who is very young
C)  who wears glasses
D)  who has a problem producing tearsE) C) and D)
F) All of the above

Question 18

Fifth disease

Accepted Answer

A)  is caused by Parvovirus B19.
B)  is a childhood febrile disease with a bright red rash on the cheeks.
C)  involves a pathogen capable of crossing the placenta.
D)  is characterized by a maculopapular rash that lasts for days to weeks.
E)  All of the choices are correct.F) A) and B)
G) A) and C)

Question 19

Which of the following is not true of staphylococcal scalded skin syndrome (SSSS) ?

Accepted Answer

A)  affects mostly newborns and babies
B)  an exotoxin-mediated disease
C)  toxin causes bullous lesions
D)  split in skin occurs between the dermis and epidermis
E)  split in skin occurs within the epidermisF) A) and E)
G) A) and D)

Question 20

Staphylococcus can be differentiated from Streptococcus by the

Accepted Answer

A)  Gram stain.
B)  coagulase test.
C)  catalase test.
D)  fermentation of mannitol.E) B) and C)
F) A) and C)

Exam 18: Infectious Diseases Affecting the Skin and Eyes

Occassionally,Staphylococcus epidermidis may be isolated from the eye.

Correct Answer
verified

Staphylococcus can be differentiated from Streptococcus by the

Correct Answer
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The main causative agent of gas gangrene is

Correct Answer
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Oral lesions called Koplik's spots are seen in patients with

Correct Answer
verified

Infections caused by Staphylococcus aureus include all of the following except

Correct Answer
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Chickenpox

Correct Answer
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The enzyme that coagulates plasma is

Correct Answer
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Fifth disease

Correct Answer
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Which is incorrect about warts?

Correct Answer
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The disease pathogenesis seen in River blindness is caused by

Correct Answer
verified

Which microorganism species is most well-adapted to life on the skin?

Correct Answer
verified

Which of the following is not true of staphylococcal scalded skin syndrome (SSSS) ?

Correct Answer
verified

Which of the following is the causative agent of tinea versicolor?

Correct Answer
verified

All staphylococci can be differentiated from all streptococci because only staphylococci produce the enzyme _____ that is easily detected in the lab.

Correct Answer
verified

Acne can be prevented with antibiotics.

Correct Answer
verified

Transmission of tineas include

Correct Answer
verified

Understanding about the defenses of the eye,you would predict that a person __________ would have a higher rate of eye infections.

Correct Answer
verified

Which of the following is not true of cellulitis?

Correct Answer
verified

Blood vessels are found in the

Correct Answer
verified

Correct Answer
verified

Exam 18: Infectious Diseases Affecting the Skin and Eyes

Occassionally,Staphylococcus epidermidis may be isolated from the eye.

Correct AnswerverifiedShow Answer

Staphylococcus can be differentiated from Streptococcus by the

Correct AnswerverifiedShow Answer

The main causative agent of gas gangrene is

Correct AnswerverifiedShow Answer

Oral lesions called Koplik's spots are seen in patients with

Correct AnswerverifiedShow Answer

Infections caused by Staphylococcus aureus include all of the following except

Correct AnswerverifiedShow Answer

Chickenpox

Correct AnswerverifiedShow Answer

The enzyme that coagulates plasma is

Correct AnswerverifiedShow Answer

Fifth disease

Correct AnswerverifiedShow Answer

Which is incorrect about warts?

Correct AnswerverifiedShow Answer

The disease pathogenesis seen in River blindness is caused by

Correct AnswerverifiedShow Answer

Which microorganism species is most well-adapted to life on the skin?

Correct AnswerverifiedShow Answer

Which of the following is not true of staphylococcal scalded skin syndrome (SSSS) ?

Correct AnswerverifiedShow Answer

Which of the following is the causative agent of tinea versicolor?

Correct AnswerverifiedShow Answer

All staphylococci can be differentiated from all streptococci because only staphylococci produce the enzyme _____ that is easily detected in the lab.

Correct AnswerverifiedShow Answer

Acne can be prevented with antibiotics.

Correct AnswerverifiedShow Answer

Transmission of tineas include

Correct AnswerverifiedShow Answer

Understanding about the defenses of the eye,you would predict that a person __________ would have a higher rate of eye infections.

Correct AnswerverifiedShow Answer

Which of the following is not true of cellulitis?

Correct AnswerverifiedShow Answer

Blood vessels are found in the

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

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