Microbiology Chapter 21 Flashcards
All of the following are normal microbiota of the skin EXCEPT _____
The single greatest cause of blindness in the world is _________
All of the following are characteristic of the Group A beta-hemolytic streptococci EXCEPT
as a routine precaution
Newborns' eyes are treated with an antibiotic
A possible complication of chickenpox is
Which region of the skin supports the largest bacterial population?
Staphylococcus aureus is responsible for all of the following EXCEPT
scalded skin syndrome.
Exfoliative toxin is responsible for
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?
They can be controlled by vaccination.
In which of the following respects is measles similar to German measles (rubella)?
There is a high incidence of congenital infections and birth defects.
Why is vaccination for rubella recommended?
It mostly affects older adults.
Which of the following statements about Reye syndrome is FALSE?
there are no animal reservoirs of the virus.
The eradication of smallpox was possible because
Which of the following is used to treat shingles?
It can be treated by eliminating fatty foods from the diet.
Which of the following is NOT true of acne?
Scabies is a skin disease caused by a
A patient has pus-filled vesicles and scabs on her face, throat, and lower back. She most likely has
The patient has vesicles and scabs over her forehead. Microscopic examination of skin scrapings shows gram-positive cocci in clusters. The etiology is
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
Warts are caused by
A 35-year-old woman 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 coagulase reaction.
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
A 17-year-old boy has pus-filled cysts on his face and upper back. Microscopic examination reveals gram-positive rods. This infection is caused by
All of the answers are correct.
Which of the following is likely to spread MRSA among athletes?
Inflammation of the thin clear membrane lining the eyelid and eye is properly termed
gram-positive cell wall.
All of the following are characteristic of Pseudomonas aeruginosa EXCEPT
Koplik spots are a diagnostic indicator of
All of the following are transmitted via the respiratory route EXCEPT
All of the following are protective factors of the skin and its secretions EXCEPT
Thrush and vaginitis are caused by
Pathogens of the skin often enter via hair follicles and ducts of the sweat glands.
The majority of the staphylococci isolated from human skin are coagulase-positive.
Haemophilus influenzae is the most common bacterial cause of pinkeye.
Candidiasis often occurs following antibiotic therapy for bacterial infections.
lue-green pus is characteristic of Pseudomonas wound infections.