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Helicobacter pylori: Quiz
  
  

Question 1: It contains a hydrogenase which can be used to obtain energy by oxidizing molecular ________ (H2) that is produced by intestinal bacteria.
NitrogenHeliumOxygenHydrogen

Question 2:
What is the binomial authority of Helicobacter pylori?
Woods, 1989
Ortiz, Ibarra-Vidal, Formas, 1989
Seegers, 1989
Goodwin et al., 1989

Question 3: [58] Actual infection rates vary from nation to nation; the Third World has much higher infection rates than the West (________, North America, Australasia), where rates are estimated to be around 25%.
Western EuropeNorthern EuropeEastern EuropeCentral Europe

Question 4: An ________ ten days after inoculation revealed signs of gastritis and the presence of H. pylori.
Human gastrointestinal tractSigmoidoscopyRectumEndoscopy

Question 5: [20] It produces adhesins which bind to membrane-associated lipids and ________ and help it adhere to epithelial cells.
GlucoseCarbohydrateSucroseFructose

Question 6: [17] The cagA gene codes for a relatively long (1186 ________) protein.
Amino acidMetabolismL-DOPAAmino acid synthesis

Question 7: [4] It produces oxidase, ________, and urease.
GPX1MyeloperoxidaseCatalasePRDX3

Question 8: More than 50% of the world's population harbour H. pylori in their upper ________.
Colorectal cancerPeritonitisHuman gastrointestinal tractAscending cholangitis

Question 9: H. pylori consists of a large diversity of strains, and the ________ of three have been completely sequenced.
DNAGeneticsGenomicsGenome

Question 10: The other proposed mechanism has been called a "perigenetic pathway"[31] and involves enhancement of the transformed host cell phenotype by means of alterations in cell ________ such as adhesion proteins.
ActinMetabolismProteinMyosin
















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