Question 4: [6] NSAIDs inhibit cyclooxygenase-1, or COX-1, an enzyme responsible for the biosynthesis of ________ in the stomach, which increases the possibility of peptic ulcers forming.
Question 7: ________ colonizes the stomach of more than half of the world's population, and the infection continues to play a key role in the pathogenesis of a number of gastroduodenal diseases.