Shreshtha55 wrote:
Can someone explain question 1 in this RC?
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Official Explanation
1. Which of the following can be most strongly inferred from the passage?
Explanation
The word inferred indicates that this is an infer/imply/suggest question. The task of the question is indicated by the phrase which of the following can be most strongly inferred. The subject of the question is Rotund proteins. In order to answer the question, determine what the passage states about the subject and evaluate the answer choices, eliminating any choice which is not supported by the passage. According to the passage, injection of purified rotund protein from wild-type mice into Rotund mice induces a decrease in food intake, an increase in body temperature, an increase in activity, and a decrease over several weeks in the ratio of energy stock tissue to skeletal muscle. Control injections lacking rotund protein did not produce these changes. Also, injection of rotund protein into normal mice does not alter weight or other parameters of mouse physiology, indicating that the weight loss in Rotund mice is not caused by toxicity of the protein to the animal. Look for an answer that reflects these ideas.
Choice A: No. While the reference to that these genes are often identified through mouse models for obesity may make this choice seem appealing, the passage provides no such comparison between the proteins in mice and humans. It may be true that the proteins are similar since research on Rotund mice may shed some light on the ongoing research on human obesity, but such similarity cannot be supported by the text.
Choice B: No. This choice may seem appealing due to outside knowledge that obesity in humans may increase the risk of heart failure. However, this choice is outside knowledge. The passage provides no connection between heart failure and Rotund mice.
Choice C: Correct. This choice is supported by the text, since Injection of purified rotund protein from wild-type mice into Rotund mice induces a decrease in food intake…skeletal muscle. If wild-type protein changes the behavior of Rotund mice, then it must be different from the protein that Rotund mice produce themselves.
Choice D: No. This choice may seem appealing, since the passage says the weight loss in Rotund mice is not caused by toxicity of the protein to the animal. However, the phrase does not have any toxic effects is too extreme to be supported by the text. The passage only eliminates one toxic effect, not all possible toxic effects.
Choice E: No. This choice may seem attractive because the passage says that research is in the development phase, but this choice is a memory trap. The passage provides no indication that the researchers have insufficient leeway.
The correct answer is choice C.
Hope it helps