Week 13

Question 1

a common food intoxication is caused by enterotoxin-producing strains of

Answer 1

staphylococcus aureus

Question 2

which is incorrect about Staph. aureus food intoxication?

Answer 2

ingestion of the pathogen allows it to multiply and damage the GI tract lining

Question 3

symptoms of Toxic Shock Syndrome include all the following, except:

Answer 3

appearance of flesh being “eaten” down to the muscle

Question 4

all of the following pertain to gonorrhea, excetp

Answer 4

a chancre-type lesion develops at the portal of entry

Question 5

the instillation of antibiotics in newborn’s eyes will prevent ophthalmia neonatorum in newborns. this disease is caused by

Answer 5

neisseria gonorrhoeae

Question 6

production of enterotoxin is a characteristic of

Answer 6

clostridium perfringens

Question 7

all of the following pertain to clostridium difficile infection, except

Answer 7

it is due to ingestion of contaminated, improperly stores, cooked meats and gravies

Question 8

what is the usual cause of pseudomembranous colitis

Answer 8

therapy with broad-spectrum antibiotics leading to superinfection by C. difficile

Question 9

which is incorrect about shigellosis?

Answer 9

it frequently involves septicemia

Question 10

salmonelloses are

Answer 10

• not caused by salmonella typhi
• associated with undercooked poultry and eggs, and reptile and rodent feces
• gastroenteritis with vomiting and diarrhea
• enteric fevers that often include septicemia

Question 11

which of the following is an agent of the sexually transmitted disease chancroid

Answer 11

haemophilus ducreyi

Question 12

characteristics of chancroid include

Answer 12

• sexually transmitted
• occurs mostly in the tropics and subtropics
• lesion develops at portal of entry
• bubo like swelling of the lymph nodes

Question 13

traveler’s diarrhea is caused by

Answer 13

enterotoxigenic strains of E. coli

Question 14

permanent cardiovascular and neurological damage is seen in which stage of syphilis

Answer 14

tertiary

Question 15

the virulence of Vibrio cholerae is due to its

Answer 15

enterotoxin

Question 16

“rice water stools” are associated with disease caused by this organism:

Answer 16

vibrio cholerae

Question 17

all of the following are characteristics of Campylobacter jejuni except:

Answer 17

it infects the stomach

Question 18

the tertiary stage of syphillis

Answer 18

is when gummas develop in tissues

Question 19

treponema pallidum

Answer 19

• is a spirochete
• can cross the placenta
• is the cause of syphillis
• is transmitted by direct sexual contact

Question 20

all of the following pertain to Candida albicans, except

Answer 20

has a large capsule

Question 21

which of the following is a sexually transmitted disease?

Answer 21

trichomoniasis

Question 22

trichomonas vaginalis

Answer 22

• is a protozoan parasite
• in males causes urethritis
• in females causes vaginitis with a foul-smelling discharge
• has four flagella and an undulating membrane

Question 23

giardiasis involves

Answer 23

symptoms of abdominal pain, flatulence, and diarrhea

Question 24

parasitic helminths have the following characteristics, except

Answer 24

are single-celled microorganisms

Question 25

enterobius vermicularis is

Answer 25

an intestinal worm that easily contaminates fingers and fomites

Question 26

all of the following pertain to tapeworms, except

Answer 26

one proglottid segment will have either female or male reproductive organs

Question 27

all of the following pertain to genital warts, except

Answer 27

are not common in the US

Question 28

herpes simplex-2 (HSV-2) causes

Answer 28

- genital lesions - vesicles on or near the genitals - symptoms that include urethritis, cervicitis, and itching - infection in neonates that have contact with lesions in the birth canal

Question 29

the worldwide, primary viral cause of morbidity and mortality from diarrhea is

Answer 29

rotavirus

Question 30

defenses of the digestive system include

Answer 30

- lysozyme - stomach acid - normal microflora - defensive proteins