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
专升本
Some fish can swim in water below 0℃, low enough to freeze the blood of most creatures. However, some fish and insects can stay
Some fish can swim in water below 0℃, low enough to freeze the blood of most creatures. However, some fish and insects can stay
admin
2018-04-13
29
问题
Some fish can swim in water below 0℃, low enough to freeze the blood of most creatures. However, some fish and insects can stay alive in the freezing water. One key to survival is a special protein in the fish’ s blood. The chemical is called the Antifreeze Protein, otherwise known as AFP and is commonly found in fish that live in cold waters.
What does AFP do in these fish? First, we need to understand what happens when water freezes. When the temperature of the water drops below 0℃ , tiny particles of ice start forming in the water. Each particle becomes larger and then sticks to other particles, forming blocks of ice. Fish take in this water and tiny particles of ice also form inside a fish’ s body. However, the AFP in the blood of the fish surrounds these particles, preventing them from sticking together to form bigger pieces of ice.
The application of AFP is promising. For example, AFP can be used to alter the taste and texture of ice-cream. It can also be used to store meat and vegetables more effectively by protecting food products from the formation of ice. Another application is in medical field, as AFP can help preserve organs for transplantation without freezing them. Scientists have known about AFP for more than 30 years, yet few of the technologies that use the AFP exist today. The process of getting the necessary amount of AFP from fish to make products was only recently discovered. Some companies in the United States and Canada have already made products using AFP, but they have yet to become popular. Although some researchers in Japan discovered that some local fish contained AFP and succeeded in creating AFP in the laboratory, more research is necessary. AFP tests will continue for these fish out of the water.
What can AFP possibly do in the future?
选项
A、Make fresh fruits and vegetables taste better.
B、Protect dried meat from being damaged by ice.
C、Keep meat and vegetables from going bad.
D、Help doctors freeze organs for transplantation.
答案
C
解析
事实细节题。由第三句可知,它可以用来储存肉和蔬菜,防止变质。故选C。
转载请注明原文地址:https://kaotiyun.com/show/ymNJ777K
本试题收录于:
英语题库普高专升本分类
0
英语
普高专升本
相关试题推荐
OkadaCleaningServiceisofferingdiscountsthismonthasaspecial________forcustomerswhorefertheirfriends.
WhenMaryMoorebeganherhighschoolin1951,hermothertoldher,“Besureandtakeatypingcoursesowhenthisshowbusinessth
Whenistheweatherreportmostprobablygiven?
Whatisthespeakerinterestedindoing?
(1)ThelibraryatWoodgrovePrimarySchoolhasbeenturnedintoa"Maker-Space".Afterregularlessonsendataround2p.m.,pu
Scientistsfindthathard-workingpeoplelivemuchlongerthanaveragemenandwomen.Careerwomenarehealthierthanhousewives
A、Fromthebankheisworkingfor.B、Fromhisfriends.C、Fromanotherbank.D、Fromhisoffice.C根据文中男士的回答“I’llborrowsomemoney
A、Students,factoryworkersandresearchers.B、Students,farmersandresearchers.C、Students,medicalworkersandresearchers.D
A、Haveafamilymeetingtochooseacharity.B、Letthechildrenfindacharityontheirown.C、Tellthechildrentheimportance
A、Exchangethecoinswithothercollectors.B、Getthecollectionfromtheirgrandparents.C、Searchthecoinsatthecollectionm
随机试题
脾主()。
信威SCDMA系统的少用户台(FST)同时支持()个无线信道,最多可为8个用户提供接入服务。
(2013年第18题)传导慢痛的外周神经纤维是
牛病毒性腹泻/黏膜病最可能出现的症状是
股票发行的定价方式有()
阅读下面的材料,根据要求作文。一个小女孩的玩具车刮倒了一位老人,老人坐在地上与家长理论,有人录下来现场视频传至网上,不少人认为是碰瓷,老人被检查后,确诊是桡骨骨折。事实是,老人并非碰瓷,还婉拒了女孩家人更多的赔偿和照顾。综合上述材料所引发的思考和感悟,
幼儿有意动作发生的标志是()
父母应以自己对工作、对生活的积极态度去影响孩子,去()孩子的性格。
BackgroundtoeconomicsuccessChina’seconomicgrowthhaslasted40yearsandrepresentsthemost【D1】______ofthe21stcent
EatingOurYoung[A]AtFeltonvilleSchoolofArtsandSciences,amiddleschoolinapoorneighborhoodofPhiladelphia,thescho
最新回复
(
0
)