question

Which of the following NOT true for both hepatitis B and hepatitis C infection?

answer

no vaccine

question

What do hepatitis A and hepatitis B have in common?

answer

both have a vaccine

question

What organ is most affected by hepatitis B virus?

answer

liver

question

Vaccines can be used to protect at-risk individuals from all of the following liver diseases EXCEPT __________.

answer

hep C

question

Part A Choose the FALSE statement from those listed below.

answer

intenstinal gas includes oxygen

question

John went to a picnic. He took some leftover chicken and rice home, heated it on the stove, ate it, and got sick two hours later. John thought the heating made his food safe because it would have killed any bacteria present. He didn't know that __________ produces a heat-stable toxin.

answer

staph aureus

question

A patient exhibits hemorrhagic colitis and is treated via intravenous rehydration. The pathogen is a gram-negative rod. It is isolated and differentiated from related organisms based on its inability to ferment sorbitol. Which of the following is a likely diagnosis?

answer

e. coli

question

Bacteria present in the __________ can be phagocytosed by Paneth cells.

answer

small intestine

question

Which of the following statements concerning mumps virus infection is FALSE?

answer

testes can become inflamed 2-3 weeks

question

H. pylori is able to survive the acidic environment of the stomach as a result of adaptations that allow it to increase the pH of the immediate environment.

answer

true

question

Gastroenteritis due to ingestion of food contaminated with Staphylococcus aureus is due to intoxication by enterotoxins.

answer

true

question

Lactic acid, an end product of fructose fermentation, causes breakdown of tooth enamel and, eventually, cavities.

answer

true

question

Aflatoxin poisoning is associated with liver cancer.

answer

true

question

An outbreak of viral gastroenteritis occurs in a pediatrics ward. Rotavirus is the most likely causative age

answer

true

question

Campylobacter gastroenteritis is the leading cause of foodborne illness in the United States.

answer

true

question

What is a Dane particle?

answer

infection viron causing HBV

question

Helicobacter pylori can grow in the stomach because it

answer

posesses enzyme that neturalizes hcl

question

All of the following are gram-negative rods that cause gastroenteritis EXCEPT

answer

clostridium

question

Microscopic examination of a patient's fecal culture shows spiral bacteria. The bacteria probably belong to the genus

answer

campylobacer jejnui

question

A 38-year-old man had onset of fever, chills, nausea, and myalgia while vacationing on the Gulf of Mexico. On April 29, he had eaten raw oysters and gone wading in the warm coastal waters. On May 2, he was admitted to a hospital because of a fever of 39°C and two circular necrotic lesions on the left leg. He had a history of alcoholic liver disease. He was transferred to the ICU; therapy with antibiotics was initiated. On May 4, he died. Which of the following is the most likely cause?

answer

vibrio vulfunicis

question

Which of the following correctly lists the stages of tooth decay?

answer

plaque accumulation, destruction of enamel, advancement of decay through enamel, decay in dentin, decay in tooth pulp

question

The most common mode of HAV transmission is

answer

food prep

question

Bacterial intoxications differ from bacterial infections of the digestive system in that intoxications

answer

shorter incubation times

question

Dental plaque is an example of

answer

biofilm

question

Many bacterial infections of the lower digestive tract are treated with

answer

water and electrolytes

question

Epidemics related to bacterial infection of the digestive system are typically caused by

answer

contaminated food and water

question

"Rice water stools" are characteristic of

answer

cholera

question

A vaccine to provide active immunity to HBV is prepared from

answer

modified yeast

question

Which of the following organisms is likely to be transmitted via contaminated shrimp?

answer

vibrio p

question

Thorough cooking of food will prevent all of the following EXCEPT

answer

staph

question

Most of the normal microbiota of the digestive system are found in the

answer

small and large intestine

question

Acute gastroenteritis that occurs after an incubation period of two to three days and commonly affects children is probably caused by

answer

rotavirus

question

The most common cause of traveler's diarrhea is

answer

e coli

question

Which of the following statements about staphylococcal food poisoning is FALSE?

answer

heating will prevent it

question

Poultry products are a likely source of infection by

answer

samonella

question

Which of the following diseases of the gastrointestinal system is transmitted by the respiratory route?

answer

mumps

question

Disease-causing exotoxins are produced by all of the following organisms EXCEPT

answer

shigella

question

Which of the following statements about salmonellosis is FALSE?

answer

morality rate is highClostridium difficile-associated diarrhea is usually preceded by

question

Clostridium difficile-associated diarrhea is usually preceded by

answer

extended anti biotic use

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