Barry James Marshall is an Australian Nobel Prize winner in Physiology or Medicine. He is currently Professor of Clinical Microbiology at the University of Western Australia. By far his most famous achievement – which in part contributed to him being made a Nobel laureate – was to demonstrate that a bacterium known as Helicobacter pylori is the cause of the majority of peptic ulcers. This discovery reversed years of medical doctrine which assumed that peptic ulcers were caused by too much acid, hence the popularity of antacid medications. Leading up to the discovery, the hypothesis had been largely ridiculed by the medical fraternity. The incredible thing about the discovery, however, is that Marshall intentionally infected himself with the bacterium to demonstrate its effects.
Marshall deliberately infected himself with multiple potential causes of peptic ulcers and found that Helicobacter pylori was the cause.
We recommend practicing these tests under real timed test conditions. Take a free timed verbal test right now.
Correct Answer: c)
EXPLANATION:
The last sentence tells us that he infected himself with 'the bacterium' (referring to Helicobacter pylori), but there is no mention of him infecting himself with other things, although he may have.
Numerical reasoning tests
Diagrammatic reasoning tests
Verbal reasoning tests
