首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Several groups of future-minded scientists are cultivating edible meat in dishes from animal muscle cells. The technology, winch
Several groups of future-minded scientists are cultivating edible meat in dishes from animal muscle cells. The technology, winch
admin
2009-06-24
53
问题
Several groups of future-minded scientists are cultivating edible meat in dishes from animal muscle cells. The technology, winch involves choosing the fight starter cells, stimulating and fine-tuning their growth for taste, texture and nutrients, has a way—a long way—to go before meat could hit supermarkets. But these researchers insist it will be a more efficient way to produce a staple of the American diet—and will make meat healthier to boot.
Growing lab meat will mean scientists can control levels and types of fats, protein and other substances and produce a product less likely to be contaminated with such food-poisoning culprits as E. coli.
But scientists who study the old-fashioned kind of meat are skeptical. It’ll never be practical. It is just too technically and financially difficult.
Meat, after all, is not simply a mass of muscle cells; it’s a complex tissue comprised of fat, nerves, blood vessels and connective tissue. Each cell type plays a role in the flavor and mouth-feel of a chicken cutlet, club steak or fillet of fish. Mimicking this structure is crucial if you want your product to be palatable.
In 1932, Winston Churchill wrote that by the 1980s people would "escape the absurdity of growing a whole chicken" by growing only desired parts—like breasts and wings—in the lab.
It was not his finest prediction. Only recently have resources been devoted to growing flesh; in July 2005, the basic methods being used were summarized in the journal Tissue Engineering.
To culture meat, scientists cut a small piece of muscle from a pig or fish, or use a few cells cultured in a lab. The cells are placed in a dish or bioreactor then "fed" with a growing fluid.
Early success came in 2002, when Touro College biology professor Morris Benjaminson reported growing fish meat in the lab. His Collaborator James marinated a batch of the cultured fish—winch the researchers said "resembled fresh fish fillets"—in olive oil, lemon and garlic before breading and deep-frying them.
"It smelled good", said Benjaminson, but neither researcher subjected the results to a taste-test. They didn’t want to nm afoul of Food and Drug Administration food safety regulations.
Despite many scientists’ skepticism, some entrepreneurs think the technology will prove perfect for items such as like sausages and chicken nuggets within as little as five years. Curing, smoking, spicing, grinding and additives can significantly transform the taste and texture of eat that goes into such processed products.
Researchers are also trying to bring down cost, making it affordable will require cheaper nutrient sources and automating the growth process.
In vitro meat may be perfect for space travel. Burr meat scientists doubt the technology will meet the demands of the consumer market any time soon, if ever. Cost and safety are major concerns. Image is another issue: Some folks are going to think this is like growing bacteria in a beaker in a lab. Food consumption is a conservative cultural phenomenon. It can take several generations to change.
选项
A、growing meat in a lab sounds far-fetched.
B、producing meat in a lab dish is far from a new idea.
C、it is ridiculous of growing only desired parts of chicken.
D、tissue-engineered meat is the inescapable future of humanity.
答案
B
解析
在实验室培养皿中造肉不是什么新想法。
转载请注明原文地址:https://kaotiyun.com/show/fWTd777K
本试题收录于:
公共英语五级笔试题库公共英语(PETS)分类
0
公共英语五级笔试
公共英语(PETS)
相关试题推荐
SuccessStoriesOneofthemostsuccessfulfashioncompaniesintheworldisBenetton.TheBenettonfamilyopenedtheirfirstsh
Thephrase"theworld"inthefirstlineofthepassagereferstoAccordingtothepassage,sea-watercanbeturnedintofresh
PushbikePerilLowspeedbicyclecrashescanbadlyinjureorevenkillchildreniftheyfallontotheendsofthehandlebars
ForecastingMethodsThereareseveraldifferentmethodsthatcanbeusedtocreateaforecast.Themethodaforecasterchoos
FinancialRisksSeveraltypesoffinancialriskareencounteredininternationalmarketing(themajorproblemsincludecomme
A.criticizedbythemediaB.thelowwageintheautoindustryC.ownacarD.ProducecarsinlargenumbersE.the8-hour-shif
Duringthepasttenyearstherehavebeendramaticchangesintheinternationalsituation.
Thetraditionalpaintingsare(exhibited)onthesecondfloor.
Leonardo’sperformanceconveystheideathatairtravelis______.AccordingtoBAA,whenshoulddomesticpassengersarriveatt
Fromhervantagepointshewatchedthemaindoorsswingopenandthefirstarrivalspourin.Thosewhohadbeenattheheadoft
随机试题
要选定多个连续的文件或文件夹,先单击第一个文件或文件夹。然后按下______不放,单击最后一个文件或文件夹,则两者之间的所有文件或文件夹(包括第一个和最后一个)均被选中。
有关胆固醇的生理功能,叙述错误的是
全面结算会员与非结算会员签订结算协议,包括的内容有()。
对货币政策目标而言,稳定物价与充分就业通常是一致的。()
根据我国社会的实际情况,服务机构归属于()。
当前教师队伍中存在着以教谋私,热衷于“有偿家教”的现象,这实际上违背了()。
张老师根据学生的成绩在班级中的相对位置和名次,确定学生的成绩在该班属于优、中、差的教学评价属于()
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性:
【2015年山东省第62题】亲子班上5对母子坐成一圈,孩子都挨着自己的母亲就坐,问所有孩子均不相邻的概率在以下哪个范围内?
中国有30000万辆自行车。在一些城市有专门的路是给骑自行车和摩托车的人用的。传统的人力车(rickshaw),两个轮子靠人拉的车已经被三轮车(pedicab)取代了。中国有些地方是用三轮车的。说好旅程的价钱以后,三轮车司机就带着旅客开始短途旅行。北京的交
最新回复
(
0
)