问题 单项选择题

甲(O)乙(●)两种物质在细胞膜两侧的分布情况如图(颗粒的多少表示浓度的高低),在进行跨膜运输时,下列说法正确的是()

 

 

A.甲进入细胞一定需要能量

B.甲运出细胞一定不需要能量

C.乙进入细胞一定有载体蛋白的参与

D.乙运出细胞一定有载体蛋白的参与

答案

参考答案:C

解析:甲细胞外浓度高,乙细胞内浓度高,甲进入细胞过程是高浓度到低浓度,不一定需要能量,A错误;甲运出细胞是从低浓度到高浓度,一定需要能量,B错误;乙进入细胞是从低浓度到高浓度,属于主动运输,需要载体和能量,C正确;乙运出细胞从高浓度到低浓度,可能是自由扩散,D错误。考点:本题考查物质运输相关知识,意在考查考生能从课外材料中获取相关的生物学信息,并能运用这些信息,结合所学知识解决相关的生物学问题。

阅读理解

Confucius(孔子) is the greatest teacher in Chinese history. He was born on September 28, 551BC(公元前) in the Kingdom of Lu, in today’s Shandong Province. When he was young, he and his mother had a hard life. At the age of fifteen, he began to learn music, and he did well in it. Then he went on learning other subjects. When he was thirty, he became a teacher. He started his own school. He believed everyone should have a chance to get education whether(无论) they were rich or poor. He had about 3, 000 students and many of them became famous.

Chinese see Confucius as the greatest thinker and also the greatest teacher. His most important ideas are kindness and good manners. He said young people should take care of the old. People should stop thinking of themselves and work for others. His ideas are around in people’s everyday life. Today people can still hear them, and they go far into east and south Asia.

小题1: Confucius was born ______.

A.in Sichuan Province

B.on August 28

C.in the Kingdom of Lu

D.about 1500 years ago小题2: Confucius was good at ______ when he was fifteen.

A.music

B.Chinese

C.math

D.other subjects小题3: As a teacher, Confucius thought that ______ could get education.

A.only the rich

B.only the poor

C.not only the rich but also the poor

D.neither the rich nor the poor小题4: Which of the following isn’t Confucius’ idea?

A.Being kind.

B.Looking after the old.

C.Working for others.

D.Thinking of ourselves.小题5: The underlined word “they” means ______.

A.good manners

B.Confucius’ ideas

C.Confucius and his students

D.Confucius’ students

单项选择题