Question 1

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

Accepted Answer

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

Question 2

Scabies is a skin disease caused by a

Accepted Answer

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

Question 3

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

Accepted Answer

A)  Encephalitis is a possible complication. 
B)  Congenital complications may occur. 
C)  They have a similar type of rash. 
D)  They are caused by the same virus. 
E)  They can be controlled by vaccination. 
A)  Encephalitis is a possible complication. 
B)  Congenital complications may occur. 
C)  They have a similar type of rash. 
D)  They are caused by the same virus. 
E)  They can be controlled by vaccination.

Question 4

Exfoliative toxin is responsible for

Accepted Answer

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

Question 5

Why is vaccination for rubella recommended?

Accepted Answer

A)  It has a high mortality rate in school- age children. 
B)  Death from secondary infections is common. 
C)  Health care workers have a high incidence of infection. 
D)  There is a high incidence of congenital infections and birth defects. 
E)  It is no longer recommended; rubella has been eradicated. 
A)  It has a high mortality rate in school- age children. 
B)  Death from secondary infections is common. 
C)  Health care workers have a high incidence of infection. 
D)  There is a high incidence of congenital infections and birth defects. 
E)  It is no longer recommended; rubella has been eradicated.

Question 6

The greatest single cause of blindness in the world is

Accepted Answer

A)  pinkeye. 
B)  trachoma. 
C)  inclusion conjunctivitis. 
D)  neonatal gonorrheal ophthalmia. 
E)  keratoconjunctivitis. 
A)  pinkeye. 
B)  trachoma. 
C)  inclusion conjunctivitis. 
D)  neonatal gonorrheal ophthalmia. 
E)  keratoconjunctivitis.

Question 7

Which of the following is used to treat herpetic keratitis?

Accepted Answer

A)  trifluridine 
B)  penicillin 
C)  fungicide 
D)  sulfonamide 
E)  acyclovir 
A)  trifluridine 
B)  penicillin 
C)  fungicide 
D)  sulfonamide 
E)  acyclovir

Question 8

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

Accepted Answer

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

Question 9

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 10

A possible complication of chickenpox is

Accepted Answer

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

Question 11

The eradication of smallpox was possible because

Accepted Answer

A)  it can be prevented with the same vaccine used to prevent chickenpox. 
B)  there are no animal reservoirs of the virus. 
C)  insect vectors were eliminated. 
D)  it occurs only in the tropics. 
E)  it was a relatively mild disease. 
A)  it can be prevented with the same vaccine used to prevent chickenpox. 
B)  there are no animal reservoirs of the virus. 
C)  insect vectors were eliminated. 
D)  it occurs only in the tropics. 
E)  it was a relatively mild disease.

Question 12

Blue- green pus is characteristic of Pseudomonas wound infections.

Accepted Answer

A) True 
 B)False

Question 13

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

Question 14

Newborns' eyes are treated with an antibiotic

Accepted Answer

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

Question 15

Which of the following statements about congenital rubella syndrome is FALSE?

Accepted Answer

A)  It can be prevented by vaccinating women prior to pregnancy. 
B)  It may be fatal to the unborn child. 
C)  It does not occur with subclinical infections. 
D)  It is contracted during the first trimester of pregnancy. 
E)  It may result in deafness, blindness, and mental retardation. 
A)  It can be prevented by vaccinating women prior to pregnancy. 
B)  It may be fatal to the unborn child. 
C)  It does not occur with subclinical infections. 
D)  It is contracted during the first trimester of pregnancy. 
E)  It may result in deafness, blindness, and mental retardation.

Question 16

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 17

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

Accepted Answer

A)  varicella- zoster virus. 
B)  Streptococcus pyogenes. 
C)  herpes simplex virus. 
D)  Staphylococcus aureus. 
E)  Candida albicans. 
A)  varicella- zoster virus. 
B)  Streptococcus pyogenes. 
C)  herpes simplex virus. 
D)  Staphylococcus aureus. 
E)  Candida albicans.

Question 18

Pathogens of the skin often enter via hair follicles and ducts of the sweat glands.

Accepted Answer

A) True 
 B)False

Question 19

The abbreviation "GAS" refers to pathogenic strains of Staphylococcus.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following pairs is mismatched?

Accepted Answer

A)  Buruli ulcer - Mycobacterium 
B)  otitis externa - Pseudomonas 
C)  keratitis - Acanthamoeba 
D)  conjunctivitis - Chlamydia trachomatis 
E)  chickenpox - poxvirus 
A)  Buruli ulcer - Mycobacterium 
B)  otitis externa - Pseudomonas 
C)  keratitis - Acanthamoeba 
D)  conjunctivitis - Chlamydia trachomatis 
E)  chickenpox - poxvirus

Exam 21: Microbial Diseases of the Skin and Eyes

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

Scabies is a skin disease caused by a

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

Exfoliative toxin is responsible for

Why is vaccination for rubella recommended?

The greatest single cause of blindness in the world is

Which of the following is used to treat herpetic keratitis?

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

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

A possible complication of chickenpox is

The eradication of smallpox was possible because

Blue- green pus is characteristic of Pseudomonas wound infections.

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

Newborns' eyes are treated with an antibiotic

Which of the following statements about congenital rubella syndrome is FALSE?

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

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

Pathogens of the skin often enter via hair follicles and ducts of the sweat glands.

The abbreviation "GAS" refers to pathogenic strains of Staphylococcus.

Which of the following pairs is mismatched?

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 Recombinant Dna

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 Diseases of the Urinary and Reproductive Systems

Environmental Microbiology

Applied and Industrial Microbiology

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