Question 1

Which region of the skin supports the largest bacterial population?

Accepted Answer

A)  forearms 
B)  armpits 
C)  scalp 
D)  feet 
E)  All of these support similarly sized bacterial populations. 
A)  forearms 
B)  armpits 
C)  scalp 
D)  feet 
E)  All of these support similarly sized bacterial populations.

Question 2

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

Accepted Answer

A)  an acid-fast reaction. 
B)  pseudopods. 
C)  a coagulase reaction. 
D)  conidiospores. 
E)  pseudohyphae. 
A)  an acid-fast reaction. 
B)  pseudopods. 
C)  a coagulase reaction. 
D)  conidiospores. 
E)  pseudohyphae.

Question 3

Inflammation of the thin clear membrane lining the eyelid and eye is properly termed

Accepted Answer

A)  keratititis 
B)  trachoma 
C)  ophthalmia neonatorum 
D)  whitlow 
E)  conjunctivitis 
A)  keratititis 
B)  trachoma 
C)  ophthalmia neonatorum 
D)  whitlow 
E)  conjunctivitis

Question 4

Newbornsʹ eyes are treated with an antibiotic

Accepted Answer

A)  when the mother has gonorrhea. 
B)  when Neisseria gonorrhoeae is isolated from the eyes. 
C)  when the mother has genital herpes. 
D)  when the mother is blind. 
E)  as a routine precaution. 
A)  when the mother has gonorrhea. 
B)  when Neisseria gonorrhoeae is isolated from the eyes. 
C)  when the mother has genital herpes. 
D)  when the mother is blind. 
E)  as a routine precaution.

Question 5

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?

Accepted Answer

A)  rubella 
B)  measles 
C)  scabies 
D)  fever blisters 
E)  chickenpox 
A)  rubella 
B)  measles 
C)  scabies 
D)  fever blisters 
E)  chickenpox

Question 6

Scabies is a skin disease caused by a

Accepted Answer

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

Question 7

The majority of the staphylococci isolated from human skin are coagulase-positive.

Accepted Answer

A) True 
 B)False

Question 8

Koplik spots are a diagnostic indicator of

Accepted Answer

A)  chickenpox. 
B)  fifth disease. 
C)  rubella. 
D)  measles. 
E)  smallpox. 
A)  chickenpox. 
B)  fifth disease. 
C)  rubella. 
D)  measles. 
E)  smallpox.

Question 9

Blue-green pus is characteristic of Pseudomonas wound infections.

Accepted Answer

A) True 
 B)False

Question 10

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

Accepted Answer

A)  Candida. 
B)  Microsporum. 
C)  Staphylococcus aureus. 
D)  Mycobacterium ulcerans. 
E)  Pseudomonas aeruginosa. 
A)  Candida. 
B)  Microsporum. 
C)  Staphylococcus aureus. 
D)  Mycobacterium ulcerans. 
E)  Pseudomonas aeruginosa.

Question 11

Exfoliative toxin is responsible for

Accepted Answer

A)  thrush. 
B)  otitis externa. 
C)  impetigo. 
D)  fever blisters. 
E)  scalded skin syndrome. 
A)  thrush. 
B)  otitis externa. 
C)  impetigo. 
D)  fever blisters. 
E)  scalded skin syndrome.

Question 12

Candidiasis often occurs following antibiotic therapy for bacterial infections.

Accepted Answer

A) True 
 B)False

Question 13

All of the following are causative agents of conjunctivitis EXCEPT

Accepted Answer

A)  Chlamydia trachomatis. 
B)  Haemophilus influenzae. 
C)  adenovirus. 
D)  herpes simplex. 
E)  Neisseria gonorrhoeae. 
A)  Chlamydia trachomatis. 
B)  Haemophilus influenzae. 
C)  adenovirus. 
D)  herpes simplex. 
E)  Neisseria gonorrhoeae.

Question 14

A possible complication of chickenpox is

Accepted Answer

A)  fever blisters. 
B)  macular rash. 
C)  congenital rubella syndrome. 
D)  encephalitis. 
E)  subacute sclerosing panencephalitis. 
A)  fever blisters. 
B)  macular rash. 
C)  congenital rubella syndrome. 
D)  encephalitis. 
E)  subacute sclerosing panencephalitis.

Question 15

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

Accepted Answer

A)  Staphylococcus aureus. 
B)  Sarcoptes. 
C)  Microsporum. 
D)  Candida. 
E)  Pseudomonas aeruginosa. 
A)  Staphylococcus aureus. 
B)  Sarcoptes. 
C)  Microsporum. 
D)  Candida. 
E)  Pseudomonas aeruginosa.

Question 16

Which of the following is used to treat sporotrichosis?

Accepted Answer

A)  oral potassium iodide 
B)  trifluridine 
C)  sulfonamide 
D)  penicillin 
E)  acyclovir 
A)  oral potassium iodide 
B)  trifluridine 
C)  sulfonamide 
D)  penicillin 
E)  acyclovir

Question 17

The normal flora of the skin is predominantly gram -negative rods.

Accepted Answer

A) True 
 B)False

Question 18

List the disease symptoms and virulence factors associated with Pseudomonas infections. Why can Pseudomonas
be difficult to control in a hospital environment?

Accepted Answer

Pseudomonas infections can cause a range

Question 19

Which of the following cause(s) ringworm?

Accepted Answer

A)  Microsporum 
B)  Mycobacterium 
C)  Epidermophyton 
D)  Microsporum and Epidermophyton 
E)  Microsporum, Epidermophyton, and Mycobacterium 
A)  Microsporum 
B)  Mycobacterium 
C)  Epidermophyton 
D)  Microsporum and Epidermophyton 
E)  Microsporum, Epidermophyton, and Mycobacterium

Question 20

Haemophilus influenzae is the most common bacterial cause of pinkeye.

Accepted Answer

A) True 
 B)False

Exam 21: Microbial Diseases of the Skin and Eyes

Which region of the skin supports the largest bacterial population?

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

Inflammation of the thin clear membrane lining the eyelid and eye is properly termed

Newbornsʹ eyes are treated with an antibiotic

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?

Scabies is a skin disease caused by a

The majority of the staphylococci isolated from human skin are coagulase-positive.

Koplik spots are a diagnostic indicator of

Blue-green pus is characteristic of Pseudomonas wound infections.

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

Exfoliative toxin is responsible for

Candidiasis often occurs following antibiotic therapy for bacterial infections.

All of the following are causative agents of conjunctivitis EXCEPT

A possible complication of chickenpox is

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

Which of the following is used to treat sporotrichosis?

The normal flora of the skin is predominantly gram -negative rods.

List the disease symptoms and virulence factors associated with Pseudomonas infections. Why can Pseudomonas be difficult to control in a hospital environment?

Which of the following cause(s) ringworm?

Haemophilus influenzae is the most common bacterial cause of pinkeye.

The Microbial World and You

Chemical Principles

Observing Microorganisms Through a Microscope

Functional Anatomy of Prokaryotic and Eukaryotic Cells

Microbial Metabolism

Microbial Growth

The Control of Microbial Growth

Microbial Genetics

Biotechnology and Dna Technology

Classification of Microorganisms

The Prokaryotes: Domains Bacteria and Archaea

The Eukaryotes: Fungi, Algae, Protozoa, and Helminths

Viruses, Viroids, and Prions

Principles of Disease and Epidemiology

Microbial Mechanisms of Pathogenicity

Innate Immunity: Nonspecific Defenses of the Host

Adaptive Immunity: Specific Defenses of the Host

Practical Applications of Immunology

Disorders Associated With the Immune System

Antimicrobial Drugs

Microbial Diseases of the Nervous System

Microbial Diseases of the Cardiovascular and Lymphatic Systems

Microbial Diseases of the Respiratory System

Microbial Diseases of the Digestive System

Microbial Disease of the Urinary and Reproductive Systems

Environmental Microbiology

Applied and Industrial Microbiology

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