Helicobacter pylori in tissue samples can be readily identified by the presence
ID: 300061 • Letter: H
Question
Helicobacter pylori in tissue samples can be readily identified by the presence of urease cell wall endospore carbon dioxide. True or false (true=A; false=B) Most Salmonella are sensitive to acid, so millions of cells must be generally be ingested for enough to survive passage through the stomach to colonize the intestines. The diarrheal disease that occurs in cholera is caused by destruction of the intestinal epithelium by the bacteria. the action of the bacterial endotoxin on the intestinal epithelial cells. the action of an enterotoxin on intestinal epithelial cells. an allergic reaction to the bacteria adhering to the intestinal epithelium. True or False (true-A; false-B). Campylobacter jejuni gastroenteritis is typically leaves the patient immune to further infection Botulism is unlike other bacterial food poisonings in that the toxin exerts harmful effects on the intestinal tract. the immune system the nervous system. the circulatory system. True or false (true = A; false = B). Brucellosis is usually acquired (via mucus membranes and minor skin injuries) from cattle or other domestic animals Poliomyelitis is transmitted by the fecal-oral route. inhalation of airborne droplets. sexual contact. contact with an open cut. Which of the following types of hepatitis virus is transmitted by the alimentary route? hepatitis A virus hepatitis C virus hepatitis B virus none of the above The parasite responsible for primary amebic meningoencephalitis is Entamoeba histolytica. Naegleria. Cyelospora Giardia lamblia. True or false (true-A; false-B). Pseudomonas aeruginosa an opportunistic pathogen, is a major cause of healthcare associated infections. Which of the following statements regarding tapeworms is false? they absorb nutrients from the host through their body wall they complete their life cycles in a single host they can form cysts in the tissue of their host they cannot be transmitted from human to human Treponema pallidum is stained with for examination in darkfield microscope the Gram stain. the acid fast slain silver nitrate. osmium tetroxide. Infants of infected mothers may contract gonococcal infections during development in the uterus. by transplacental transmission of the bacteria. by contamination from the mothers hands shortly after birth.Explanation / Answer
77. ANS: a. urease
Helicobacter pylori is identified in tissues by the presence of urease enzyme. This bacteria will breaks the urea which present in the stomach
78. ANS: A. TRUE.
Salmonella species are an acid-sensitive bacteria. that can sensitive to stomach acid.
79. ANS: C. The action of enterotoxins on intestinal epithelial cells.
Vibrio cholerae can produce enterotoxins, that act by attaching to cell that line the intestine where it produces a toxins. It interferes normal absorption and secretion of fluids.
80. ANS: A. TRUE.
campylobacter jejuni is typically self limiting bacteria and it does respond to antibiotics.
81. ANS: B. The nerve system.
In botulinum the nerves loss their ability to stimulate muscle contraction.
82. ANS: A. TRUE.
Brucellosis in humans generally associate with the consumption of unpasteurized milk of infected animals.
83. ANS: A. The fecal-oral route.
Polio virus is spread through the stool of an infected person to another person by up taking contaminated water or food (fecal-oral transmission).
84. ANS: A. Hepatitis A
It cause liver damage and it transmitted by fecal-oral route. it formally called Epidemic Hepatitis.
85. ANS: A. Entamoeba histolytica
amebic meningoencephalitis is caused by entamoeba histolytica and it causes sporadic central nervous system (CNS) infection.
86. ANS: A. TRUE.
Pseudomonas aeruginosa is an opportunistic pathogen. The broad spectrum of clinical symptoms are...
1. Pulmonary infection
2. Bone and joint infections.
3. Urinary tract infection.
87. ANS: B. They complete their life cycle in single host.
The Taenia solium can complete its life cycle in humans (definitive host) and pigs (Intermediate host).
88. ANS: C. Silver nitrate.
Treponema pallidum are Gram negative bacteria, But they do not stained by Gram staining.
89. ANS: B. By transplacental transmission of bacteria.
Gonococcal infection vertically transmitted from mother to child in labor.
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