mcb ch 25 – Flashcard
39 test answers
Unlock all answers in this set
Unlock answers 39question
Part A Choose the FALSE statement from those listed below.
answer
intenstinal gas includes oxygen
Unlock the answer
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
Unlock the answer
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
Unlock the answer
question
Bacteria present in the __________ can be phagocytosed by Paneth cells.
answer
small intestine
Unlock the answer
question
Which of the following statements concerning mumps virus infection is FALSE?
answer
testes can become inflamed 2-3 weeks
Unlock the answer
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
Unlock the answer
question
Gastroenteritis due to ingestion of food contaminated with Staphylococcus aureus is due to intoxication by enterotoxins.
answer
true
Unlock the answer
question
Lactic acid, an end product of fructose fermentation, causes breakdown of tooth enamel and, eventually, cavities.
answer
true
Unlock the answer
question
Aflatoxin poisoning is associated with liver cancer.
answer
true
Unlock the answer
question
An outbreak of viral gastroenteritis occurs in a pediatrics ward. Rotavirus is the most likely causative age
answer
true
Unlock the answer
question
Campylobacter gastroenteritis is the leading cause of foodborne illness in the United States.
answer
true
Unlock the answer
question
What is a Dane particle?
answer
infection viron causing HBV
Unlock the answer
question
Helicobacter pylori can grow in the stomach because it
answer
posesses enzyme that neturalizes hcl
Unlock the answer
question
All of the following are gram-negative rods that cause gastroenteritis EXCEPT
answer
clostridium
Unlock the answer
question
Microscopic examination of a patient's fecal culture shows spiral bacteria. The bacteria probably belong to the genus
answer
campylobacer jejnui
Unlock the answer
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
Unlock the answer
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
Unlock the answer
question
The most common mode of HAV transmission is
answer
food prep
Unlock the answer
question
Bacterial intoxications differ from bacterial infections of the digestive system in that intoxications
answer
shorter incubation times
Unlock the answer
question
Dental plaque is an example of
answer
biofilm
Unlock the answer
question
Many bacterial infections of the lower digestive tract are treated with
answer
water and electrolytes
Unlock the answer
question
Epidemics related to bacterial infection of the digestive system are typically caused by
answer
contaminated food and water
Unlock the answer
question
"Rice water stools" are characteristic of
answer
cholera
Unlock the answer
question
A vaccine to provide active immunity to HBV is prepared from
answer
modified yeast
Unlock the answer
question
Which of the following organisms is likely to be transmitted via contaminated shrimp?
answer
vibrio p
Unlock the answer
question
Thorough cooking of food will prevent all of the following EXCEPT
answer
staph
Unlock the answer
question
Most of the normal microbiota of the digestive system are found in the
answer
small and large intestine
Unlock the answer
question
Acute gastroenteritis that occurs after an incubation period of two to three days and commonly affects children is probably caused by
answer
rotavirus
Unlock the answer
question
The most common cause of traveler's diarrhea is
answer
e coli
Unlock the answer
question
Which of the following statements about staphylococcal food poisoning is FALSE?
answer
heating will prevent it
Unlock the answer
question
Poultry products are a likely source of infection by
answer
samonella
Unlock the answer
question
Which of the following diseases of the gastrointestinal system is transmitted by the respiratory route?
answer
mumps
Unlock the answer
question
Disease-causing exotoxins are produced by all of the following organisms EXCEPT
answer
shigella
Unlock the answer
question
Which of the following statements about salmonellosis is FALSE?
answer
morality rate is highClostridium difficile-associated diarrhea is usually preceded by
Unlock the answer
question
Clostridium difficile-associated diarrhea is usually preceded by
answer
extended anti biotic use
Unlock the answer
