【OG24-720题】In response to viral infection, the immune systems of mice typically produce antibodies that destroy the virus by binding to proteins on its surface. Mice infected with the herpesvirus generally develop keratitis, a degenerative disease affecting part of the eye. Since proteins on the surface of cells in this part of the eye closely resemble those on the herpesvirus surface, scientists hypothesize that these cases of keratitis are caused by antibodies to the herpesvirusWhich of the following, if true, most helps to support the scientists' reasoning?_mofa留学圈mofaGRE在线题库系统_GRE在线搜题_GRE题库解析_GRE真题机经_GRE课程_GRE培训机构

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In response to viral infection, the immune systems of mice typically produce antibodies that destroy the virus by binding to proteins on its surface. Mice infected with the herpesvirus generally develop keratitis, a degenerative disease affecting part of the eye. Since proteins on the surface of cells in this part of the eye closely resemble those on the herpesvirus surface, scientists hypothesize that these cases of keratitis are caused by antibodies to the herpesvirus

Which of the following, if true, most helps to support the scientists' reasoning?

Other types of virus have surface proteins that closely resemble proteins found in various organs of mice. Mice that are infected with the herpesvirus but do not develop keratitis produce as many antibodies as infected mice that do develop keratitis Mice infected With a new strain of the herpesvirus that has different surface proteins did not develop keratitis Mice that have never been infected with the herpesvirus can sometimes develop keratitis There are mice that are unable to form antibodies in response to herpes infections, and these mice contract herpes at roughly the same rate as other mice

正确答案： C

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题干翻译
疱疹病毒通过与表面蛋白质结合。感染疱疹病毒的老鼠通常会患上角膜炎（一种影响眼睛部分区域的退化性疾病）。因为眼睛这部分细胞表面的蛋白质与疱疹病毒表面的蛋白质非常相似，科学家假设这些角膜炎病例是由疱疹病毒的抗体引起的。 逻辑链
Eye proteins ≈ Virus proteins → Antibodies cause keratitis 问题类型
增强题 推理过程
科学家基于眼睛部分细胞表面蛋白和疱疹病毒表面蛋白相似，提出疱疹病毒抗体引发角膜炎的假设。需要找到能加强“抗体引发角膜炎”这一因果关系的选项。 选项分析
A选项：其他类型病毒的表面蛋白与老鼠各种器官中的蛋白相似。与本题讨论的疱疹病毒抗体和角膜炎的因果关系无关，话题不一致，排除。 B选项：感染疱疹病毒但未患角膜炎的老鼠和患角膜炎的老鼠产生抗体数量的比较。仅仅比较抗体数量，不能直接说明抗体和患角膜炎之间的因果联系，无法加强，排除。 C选项：感染具有不同表面蛋白的新疱疹病毒株的老鼠没有患上角膜炎。从反面说明当疱疹病毒表面蛋白改变后，老鼠就不患角膜炎了，也就意味着原病毒的表面蛋白与引发角膜炎有关，进而加强了是其抗体引发角膜炎的结论，当选。 D选项：从未感染过疱疹病毒的老鼠有时也会患角膜炎。说明存在其他因素可导致角膜炎，削弱了疱疹病毒抗体引发角膜炎的结论，排除。 E选项：无法形成针对疱疹感染抗体的老鼠感染疱疹的几率与其他老鼠大致相同。讨论的是感染几率，与抗体是否引发角膜炎的因果关系无关，排除。

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