[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-421916-105":59,"doc-detail-421916-en":131},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":124,"head_meta":126,"extra_data":128,"updated_unix":130},105,"en","mcat-cars-practice-passages-review","MCAT CARS Practice Passages & Review","","MCAT CARS Practice Passages & Review provides reading-comprehension practice passages centered on analytical questions and passage-based reasoning. The included passage discusses public safety concerns around beef and emerging prion diseases, explaining uncertainties about causes, testing limits, incubation timing, and epidemiological forecasting. It also outlines how experimental findings in animal models refine understanding while key transmission risks to humans remain unknown. 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Within hours of the news, supermarkets around the country had begun to take oxtail, T-bone steak and beef ribs off their shelves.  \nThe announcement added to the woes of  \n10 Britain’s already mutinous beef-farmers. Even before Mr. Cunningham made his unexpected announcement, Welsh farmers, hit by falling beef prices and the continuing European Union ban on British beef exports, had been blockading ports  \n15 and hurling imports of Irish beef into the sea. But for the most British people, the future of beef prices is the least of their worries . The government announcement has raised new questions about the safety of beef, and raised  \n20 again the nightmare scenario of a wide-scale epidemic of new variant Creutzfeldt-Jakob disease (NVCJD), the human equivalent of BSE. Obvious questions are again being asked. Is any beef safe to eat? Is milk safe to drink? And how much do  \n25 we now know about the chances of an epidemic of NVCJD?  \nThe difficulties in answering these questions are threefold. Prion diseases —comprising BSE, all forms of CJD, scrapie (the  \n30 sheep equivalent) and some others—are among the most mysterious diseases known to science. It is not even clear what causes them, let alone anything else. As there is still no test to tell whether animals are infected, experiments to find  \n35 out whether or not beef is safe takes ages. The best experimental model is the mouse, but infected mice may take two years to show signs and symptoms of prion diseases. NVCJD is so new that it is impossible to make any reliable  \n40 predications about the potential for an epidemic. Crucial variables ford such forecasts, like the average time from infection to disease in people, or the variation around that average, simply cannot be determined yet.  \n45 John Major’s government first announced the possible connection between BSE and NVCJDin March last year. In Britain 22 people are now known to have died from the new disease, and another handful are sick. Meanwhile, a steady drip  \n50 of experimental results has diminished the uncertainty over whether or not the two diseases are the same. Most recently, experiments on mice that compared different kinds of prion diseases showed not only that NVCJD and BSE had the  \n55 same incubation time but the same pathology in the brain—and that this was different from either scrapie or other forms ofCJD.  \nBut unfortunately, hardly anything is known about how BSE might be transmitted to  \n60 people. The government’s ban on bones is a response to experiments that suggest that bone marrow and some types of nerve tissue besides the brain and spinal cord can cause disease in mice. But since the dose required to cause disease in  \n65 people is unknown, it is impossible to know how large any risk might be.  \nNonetheless, at the same time that he announced the ban, Mr. Cunningham insisted that other cuts of British beer are still safe to eat. In his  \n70 favor, the latest estimates suggest that the epidemic of BSE in cattle is dying out, and that British herds may be free of the disease by early in the next century. Thus, in a painful irony, what risk there is from beef products may be lower now  \n75 than it has been at any p","cbCaimRLHPJoGwK3","https://ap.wps.com/l/cbCaimRLHPJoGwK3","pdf",654709,12,"English","# Passage One\n# Passage Two\n# Passage Three\n# Passage Four\n# Passage Five\n## Passage 1-Questions\n## Answer Key","[{\"question\":\"What are the main uncertainties highlighted about prion diseases in the passage?\",\"answer\":\"The passage emphasizes that prion diseases are mysterious, with unclear causes and no reliable test to determine whether animals are infected. It also notes major forecasting variables cannot yet be determined for NVCJD.\"},{\"question\":\"Why does the passage say experiments using mice take a long time?\",\"answer\":\"It states there is still no test to determine infection status, so experiments must observe whether animals develop symptoms. For infected mice, signs of prion diseases may take about two years to appear.\"},{\"question\":\"What additional information would most help predict a potential NVCJD epidemic?\",\"answer\":\"The passage indicates crucial variables include the average time from infection to disease in people and the variation around that average. Without those human timing data, reliable predictions cannot be made.\"}]","MCAT CARS Practice Passages & Review | PDF",1790625822]