rohitjha12 wrote:
Hi Experts,
Can you please explain why the answer to Q1 is 'C'? Nowhere in the passage is the mention of COX-2 inhibitor introduction year. For me , the answer should be 'B' as 'Naproxen' inhibits COX 2 also.
Please share your opinion.
Regards,
Rohit
The word "suggests" in the question indicates that this is an inference question. The correct answer, therefore, will not be directly stated in the passage, but it will be based only on information found within the passage, with no outside speculation or assumptions necessary.
(A) Paragraph 2 states that COX-1 enzymes stimulate production of prostaglandins that "protect the stomach from irritating gastric acids.” As stated in paragraph 3, however, COX-2 inhibitors were designed to affect only COX-2; the specific impetus was not to interrupt the beneficial effects of COX-1.
(B) The author never describes the side effects caused by COX-2 and furthermore he states in paragraph 3 that the COX-2 drugs were designed “in order to eliminate the side effects of aspirin and related drugs.” Paragraph 2 states that Naproxen is one of those related drug.
(C) CORRECT. Paragraph 3 states that the drug class known as COX-2 inhibitors was introduced by “several pharmaceutical companies in the 1990s." Paragraph 1 states “their mechanisms of action having been discovered only in 1971." This suggests that approximately 20 years passed between the initial discovery and the introduction of COX-2 inhibitors.
(D) This choice is incorrect as it describes COX-2 enzymes, not COX-2 inhibitors; in addition, the information is directly stated in the passage rather than suggested. Paragraph 2 states that COX-2 appears to stimulate production of prostaglandins that "induce inflammation in injured tissues.”
(E) This choice is incorrect as it describes prostaglandins, not the drug class COX-2 inhibitors. Paragraph 2 states that prostaglandins are "generated by most mammalian tissues in response to external stimuli" and "prostaglandins act on the cells that produce them."