问题 单项选择题

下图为细胞间信息传递的几种方式示意图,下面有关说法不正确的是()

A.图甲内分泌细胞产生的激素若是胰岛素,则靶细胞主要是肝细胞和肌细胞

B.图乙可以表示精子与卵细胞结合时的信息交流方式

C.图丙中靶细胞若是神经细胞,则细胞之间可以发生电信号→化学信号→电信号的转变

D.上图三种方式中信息的传递都需要细胞膜上载体的协助

答案

参考答案:D

解析:

胰岛素加快组织细胞摄取、利用和储存葡萄糖,合成糖原主要是肝细胞和肌细胞,故A正确。精卵细胞结合细胞膜之间的直接接触,故B正确。如果靶细胞是神经细胞,突触结构可以将电信号转变为化学信号再转变为电信号,故C正确。上图三种方式中信息的传递都需要细胞膜上受体的协助,故D错误。

考点:本题考查信息传递相关知识,意在考察考生对知识点的理解掌握程度。

填空题
阅读理解

阅读理解。

     根据短文内容,从短文后的七个选项中选出能填入空白处的最佳选项,选项中有

两项为多余选项。

    The Wife-carrying World Championship has been celebrated in a small town in central Finland since

1992. In 1992, the people of the town decided to restart some long-forgotten traditions.   1  He was said

to only accept men as members of his gang who proved their worth in challenges. At that time, it was also a common practice to steal women from neighboring villages.

       2  A large number of competitors, people, and journalists from Finland to Canada attend the

Wife-carrying World Championship every year.

      3  The Wife-carrying World Championship is held on a 253.5 meters long official track. The track

has two dry obstacles and a water obstacle, about a meter deep. The wife to be carried may be your

own, or your neighbor's. The minimum weight of the wife to be carded is 49 kg. If she is less than 49 kg,

the wife will be given a heavy bag to carry. Each time a competitor drops his wife, that couple will be

fined 15 seconds.    4  

    Alongside with the Wife-carrying World Championship, there is also a team competition. The distance

is the same but three men in the team carry the wife in turns. At the exchange point the carrier has to drink official "wife-carrying drink". Then he may continue the race.  5  

    While the Wife-carrying World Championship is being held, there are bands playing music, a

wife-carrying dance and other forms of entertainment.

A. There are a few basic rules.

B. People everywhere hold the event.

C. A special prize is awarded to the team.

D. Do you know how these traditions restarted?

E. This event is becoming increasingly popular.

F. The winner is the couple who complete the course in the shortest time.

G. Back in the late 1800s, there was a robber called Rosvo-Ronkainen in that area.