首页
登录
职称英语
Animals live longer when their calorie intake is restricted to two-thirds of wha
Animals live longer when their calorie intake is restricted to two-thirds of wha
游客
2024-01-10
33
管理
问题
Animals live longer when their calorie intake is restricted to two-thirds of what is considered normal for their species. Animals so restricted are also generally healthier: most disease, including cancer, diabetes, and neurodegenerative illness, are forestalled. Q2This phenomenon was long attributed to a simple slowing of metabolism (cells’ production of energy from fuel molecules) and consequent reproduction of its toxic by-products in response to less food. In fact, however, calorie restriction does not slow mammalian metabolism, and Q1in yeast and worms, metabolism is both sped up and altered. Some scientists now theorize that calorie restriction is a biological stressor that, like natural food scarcity, induces a more complex defensive response, which in mammals includes changes in cellular defenses and repair. [br] In the passage, the function of the highlighted portion is to
选项
A、Provide specific examples of organisms whose longevity does not increase in response to calorie restriction.
B、Illustrate the probable means by which organisms placed on a calorie-restriction diet compensate for the reduction in available food-based level.
C、Suggest the mechanism that is responsible for prolonging the life of organism whose calorie intake is significantly reduced.
D、Give an example that explain why scientists’ thinking about the physiological effects of calorie restriction changed.
E、Distinguish the different ways that mammalian and non-mammalian metabolisms respond to significant reductions in calorie intake
答案
D
解析
本题定位在第四句。本句话的功能是用来反驳之前的老观点,而高亮部分的酵母菌和蠕虫相当于起到反驳作用的例子。因此D正确。
转载请注明原文地址:https://tihaiku.com/zcyy/3350594.html
相关试题推荐
Electroniccomputerspeedsarerestrictednotonlybythespeedofel
Despitethefactthatthelifespanofanimalsisconvenientlydividedintosepa
Nolongerconsidered(i)______,thebeliefthatallofPuertoRico’sindigenous
Manyanimalsareableto______theharmfuleffectsofcoldweatherbymeansoffe
Thatbisoncongregateinlargeherdssuggeststhattheyare(i)______animals,ye
Theexistenceofenvironmentalcontaminationisnolongerapointof______;gove
Animalslivelongerwhentheircalorieintakeisrestrictedtotwo-thirdsofwha
Ethnologistsareconvincedthatmanyanimalssurvivethroughlearningbutlearni
Forcenturiesanimalshavebeenusedas____forpeopleinexperimentstoassess
Nolonger(i)____bythebeliefthattheworldarounduswasexpresslydesigned
随机试题
WhyPeopleBuyWhydopeoplebuy?Whydop
Theageofgildedyouthisover.Today’sunder-thirtiesarethefirstgenerat
从颞窗检查颅底动脉,经常表现为断续的血流信号,较难显示的动脉是A.大脑中动脉
下列哪项不是慢性盆腔炎的临床表现A.少腹一侧或双侧隐痛,反复发作 B.突然少腹
信息焦虑:指人们在过量信息包围下因为难以获取、处理、利用所需信息而产生的厌倦、烦
在不同的社会经济条件、城市自然条件和建设条件下,不同城市的道路系统有不同的发展形
行业分类的依据主要是公司收入或利润的来源比重,目前我国常见的分类标准包括()。
其他合作机构风险的防控措施包括()。 A.深人调查,选择讲信用、重诚信
2017年3月1日,郑某到甲公司工作,6月1日甲公司与郑某签订了2年
公路水运工程生产安全重大事故隐患排查治理的责任主体是( )。A.交通运输主管部门
最新回复
(
0
)