Question 1

Necrotizing fasciitis is _______.

Accepted Answer

A)   possibly caused by antibodies to Group A streptococci that cross-react with body tissues
B)   associated with strains of Streptococcus pyogenes producing destructive enzymes and toxins
C)   not treatable with antimicrobial drugs
D)   also called impetigo
E)   typically a sequelae of streptococcal pharyngitisF) A) and C)
G) C) and D)

Question 2

Leishmaniasis is transmitted through the bite of a/an ______.

Accepted Answer

A)   tsetse ﬂy
B)   reduviid "kissing" bug
C)   sand ﬂy
D)   hard-bodied tick
E)   Anopheles mosquitoF) B) and D)
G) A) and C)

Question 3

Which of the following statements regarding viremia is incorrect?

Accepted Answer

A)   Droplet transmission of viruses like the measles virus results in viremia.
B)   Shingles is a manifestation of persistent viremia after a course of chicken pox.
C)   HHV-3 is disseminated to the skin by viremia.
D)   The variola virus multiplies in white blood cells, and cell lysis results in viremia.E) B) and D)
F) B) and C)

Question 4

The environment of human skin requires an adaptation for microbes that can tolerate moderately ______ conditions.

Accepted Answer

A)   anaerobic
B)   psychrophilic
C)   alkaline
D)   halophilic
E)   thermophilicF) C) and E)
G) A) and B)

Question 5

Which of the following statements regarding eye infections is correct?

Accepted Answer

A)   Inﬂammation occurs in most eye infections and serves to initiate repair of the damaged tissue.
B)   Immune privilege restricts virtually all microbes from the tissues of the eye.
C)   Eye infections may be opportunistic infections by the normal microbiota of the eye.
D)   Lysozyme in tears targets the gram-negative microbes that contact the eye.E) None of the above
F) All of the above

Question 6

In the skin, blood vessels are found in the ______.

Accepted Answer

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

Question 7

The toxin of Staphylococcus aureus that causes blisters and desquamation of skin in staphylococcal scalded skin syndrome is ______.

Accepted Answer

A)   erythrogenic toxin
B)   toxic shock syndrome toxin
C)   hemolysin
D)   exfoliative toxin
E)   enterotoxinF) None of the above
G) B) and D)

Question 8

Mannitol salt agar is selective for Staphylococcus aureus because this organism ________.

Accepted Answer

A)   is often resistant to methicillin
B)   can tolerate brief exposures to high temperature
C)   can withstand high salt concentration
D)   is unique in its ability to ferment mannitol
E)   can synthesize catalaseF) A) and E)
G) A) and D)

Question 9

Staphylococcus can be differentiated from Streptococcus by the ______.

Accepted Answer

A)   coagulase test
B)   Gram stain
C)   catalase test
D)   fermentation of mannitol
E)   cellular morphologyF) D) and E)
G) A) and D)

Question 10

The eye generally has diverse normal biota present, similar to the skin microbiome.

Accepted Answer

A) True 
 B)False

Question 11

Keratitis is usually caused by ______.

Accepted Answer

A)   Streptococcus pyogenes
B)   Neisseria gonorrhoeae
C)   Staphylococcus aureus
D)   herpes simplex virus type 1 (HSV-1) E) C) and D)
F) B) and D)

Question 12

Which of the following is mismatched?

Accepted Answer

A)   Tinea cruis - ringworm of the groin
B)   Tinea capitis - ringworm of the beard
C)   Tinea corporis - ringworm of the body
D)   Tinea pedis - ringworm of the foot
E)   Tinea unguium - ringworm of the nailsF) C) and E)
G) None of the above

Question 13

Measles is also known as ______.

Accepted Answer

A)   rubeola
B)   ?fth disease
C)   varicella
D)   shingles
E)   rubellaF) B) and D)
G) C) and D)

Question 14

Impetigo involves itching papules that break and form a very contagious yellow crust.

Accepted Answer

A) True 
 B)False

Question 15

The smallpox vaccine uses the ______ virus.

Accepted Answer

A)   herpes simplex
B)   vaccinia
C)   smallpox
D)   human herpesvirus 6
E)   variolaF) A) and E)
G) C) and D)

Question 16

The two tissues of the eye with exposed surfaces susceptible to contamination are the ______ and the ______.

Accepted Answer

A)   cornea; lens
B)   cornea; iris
C)   conjunctiva; iris
D)   conjunctiva; cornea
E)   conjunctiva; lensF) A) and B)
G) All of the above

Question 17

Transmission of tineas include _______.

Accepted Answer

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

Question 18

In a recent surgery, when the cut area was sutured, bacteria entered the open tissue. As a result, you now have an infection of deep tissue exhibiting redness, swelling, pain, fever, and a rash. With your knowledge of microbiology, you predict that you have a developed an infection caused by ______.

Accepted Answer

A)   E. coli
B)   human herpesvirus 3
C)   Staphylococcus
D)   NeisseriaE) B) and C)
F) A) and D)

Question 19

Which of the following statement is incorrect about warts?

Accepted Answer

A)   They include deep plantar warts on the soles of the feet.
B)   They are frequently cancerous.
C)   They are caused by human papillomaviruses (HPV) .
D)   They are transmitted by direct contact or fomites.
E)   Topical salicylic acid can be used for removal.F) A) and D)
G) A) and C)

Question 20

Which of the following is not true of bacterial conjunctivitis?

Accepted Answer

A)   Treatment is with a broad-spectrum topical antibiotic.
B)   It can be transmitted through both direct and indirect contact.
C)   Infection produces a clear discharge from the eye.
D)   It can be caused by S. pyogenes or S. pneumoniae.E) A) and B)
F) C) and D)

Exam 18: Infectious Diseases Affecting the Skin and Eyes

The eye generally has diverse normal biota present, similar to the skin microbiome.

Correct AnswerverifiedShow Answer

Keratitis is usually caused by ______.

Correct AnswerverifiedShow Answer

The smallpox vaccine uses the ______ virus.

Correct AnswerverifiedShow Answer

The toxin of Staphylococcus aureus that causes blisters and desquamation of skin in staphylococcal scalded skin syndrome is ______.

Correct AnswerverifiedShow Answer

Measles is also known as ______.

Correct AnswerverifiedShow Answer

In the skin, blood vessels are found in the ______.

Correct AnswerverifiedShow Answer

Impetigo involves itching papules that break and form a very contagious yellow crust.

Correct AnswerverifiedShow Answer

Which of the following is mismatched?

Correct AnswerverifiedShow Answer

Mannitol salt agar is selective for Staphylococcus aureus because this organism ________.

Correct AnswerverifiedShow Answer

Which of the following statements regarding viremia is incorrect?

Correct AnswerverifiedShow Answer

Staphylococcus can be differentiated from Streptococcus by the ______.

Correct AnswerverifiedShow Answer

Leishmaniasis is transmitted through the bite of a/an ______.

Correct AnswerverifiedShow Answer

Which of the following is not true of bacterial conjunctivitis?

Correct AnswerverifiedShow Answer

The environment of human skin requires an adaptation for microbes that can tolerate moderately ______ conditions.

Correct AnswerverifiedShow Answer

Which of the following statement is incorrect about warts?

Correct AnswerverifiedShow Answer

Necrotizing fasciitis is _______.

Correct AnswerverifiedShow Answer

Transmission of tineas include _______.

Correct AnswerverifiedShow Answer

Which of the following statements regarding eye infections is correct?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The two tissues of the eye with exposed surfaces susceptible to contamination are the ______ and the ______.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The two tissues of the eye with exposed surfaces susceptible to contamination are the and the .

Correct Answer
verified