Question 1

Which of the following helminths is not diagnosed by finding eggs in the feces?

Accepted Answer

A)  Trichinosis 
B)  Whipworm 
C)  Ascariasis 
D)  Hookworm

Question 2

Which statement about host susceptibility is incorrect?

Accepted Answer

A)  hepatitis E has an exceptionally high mortality rate in pregnant women 
B)  only people who eat shellfish in the endemic regions ingest Fasciola hepatica 
C)  breast fed babies are less susceptible to Rotavirus infections 
D)  cryptosporidiosis causes disease only in immunocompromised individuals

Question 3

Your 14-month old daughter is fussy when you bring her home from daycare. And when you change her diaper you are shocked to find diarrhea with blood and mucus. Which pathogen might she have and why did you reach that diagnosis?

Accepted Answer

The answer of Your 14-month old daughter is fussy when...

Question 4

Streptococcus form ________ ,a cement-like substance that enables bacteria to adhere to the tooth surface.

Accepted Answer

A)  glucose 
B)  fructose 
C)  maltose 
D)  dextrans

Question 5

_____ resists the acid in the stomach and attaches in the large intestines. It creates special filaments to infect other cells. Within 1-4 days the patient has diffuse diarrhea,with blood and mucus,which could lead to kwashiorkor and vitamin B12 deficiencies.

Accepted Answer

A)  Salmonella typhi 
B)  Vibrio cholerae 
C)  Shigella dysenteriae 
D)  Staphylococcus aureus

Question 6

Feces are composed about 50% by weight and volume of bacteria. Most of these are species of ________.

Accepted Answer

A)  Salmonella 
B)  Escherichia 
C)  Bacteroides 
D)  Streptococcus

Question 7

Taxonomically,Salmonella has been broken down into 2000 different _______ ,depending on the antigens on their surface.

Accepted Answer

A)  species 
B)  serovars 
C)  subspecies 
D)  genera

Question 8

All of the statements about mumps are true except

Accepted Answer

A)  Domestic pets can be carriers of the virus. 
B)  Caused by a paramyxovirus. 
C)  Incidence of disease is significantly less since the vaccine was licensed. 
D)  Parotid glands swell 14 to 21 days after exposure.

Question 9

Which Hepatitis virus only causes severe disease when there is a coinfection with Hepatitis B?

Accepted Answer

A)  Hepatitis A 
B)  Hepatitis D 
C)  Hepatitis C 
D)  Hepatitis G

Question 10

Which can be found in a peanut butter and jelly sandwich,if moldy peanuts were used to make the peanut butter?

Accepted Answer

A)  aflatoxin 
B)  ergot 
C)  Amanita 
D)  two of the above

Question 11

Which gastrointestinal bacterial diseases causes systemic symptoms without diarrhea?

Accepted Answer

A)  Asiatic cholera 
B)  Vibriosis 
C)  Typhoid fever 
D)  Staphylococcus food poisoning

Question 12

Helicobacter pylori survives in the stomach due to

Accepted Answer

A)  a thick capsular layer 
B)  endospore formation 
C)  a teichoic acid receptor 
D)  the production of urease

Question 13

Echinococcus granulosus is characterized by all of the following except

Accepted Answer

A)  it is a tapeworm 
B)  children are infected when their faces are licked by infected dogs 
C)  may form cysticercus in bladder 
D)  may form hydatid cysts in vital tissues, like the brain

Question 14

Which microbe is responsible for a self-limiting disease whose symptoms include abdominal pain,fever (probably due to endotoxins),and diarrhea with blood and mucus within 8-48 hours of ingestion?

Accepted Answer

A)  Staphylococcus aureus 
B)  Clostridium botulinum 
C)  Salmonella enteritidis 
D)  Pseudomonas cocovenenans

Exam 22: Oral and Gastrointestinal Diseases