21.下列细胞中既有中心体又有细胞壁的是(     )。 A.肝细胞 

21.下列细胞中既有中心体又有细胞壁的是(     )。

A.肝细胞    B.衣藻     C.蓝藻       D.洋葱根尖细胞

答案

B

相关题目

将4molA气体和2molB气体在2L的容器中混合,并在一定条件下发
将4molA气体和2molB气体在2L的容器中混合,并在一定条件下发生如下反应:2A(g)+B(g)2C(g)。若经过2s测得C的浓度为0.6mol/L,现有下列几种说法,其中
    下图所示区域在18。S太平洋附近,L示意流经沿岸的洋流
    下图所示区域在18。S太平洋附近,L示意流经沿岸的洋流。据此完成11〜12题。 11.下图是海洋表层海水温度与洋流关系示意图,图中a、b、c为等温线
《剑桥中华人民共和国史》一书中提出,从1953—1956年短短的
《剑桥中华人民共和国史》一书中提出,从1953—1956年短短的几年时间里,中国实现了对全社会各种行业的国有化或称作集体化运动,公有制经济得以确
阅读下面的文言文,完成文后小题。 宣皇帝讳懿,字仲达,
阅读下面的文言文,完成文后小题。 宣皇帝讳懿,字仲达,河内温县孝敬里人,姓司马氏。帝少有奇节,少有奇节,聪明多大略,博学洽闻,伏膺儒教
Mr and Mrs Smith had always spent their summer holidays in New Jersey in the pas
Mr and Mrs Smith had always spent their summer holidays in New Jersey in the past, staying in a small inn(旅店) at the foot of a hill. One year, however, Mr. Smith made a lot of money in his busines
—Are you going to help John with his Chinese this evening? —No,He ________
—Are you going to help John with his Chinese this evening? —No,He ________ to England.He will be back next month. A.returned             B.has returned           C.
When I worked as the general manager of the firm, I sometimes had _____ to visit
When I worked as the general manager of the firm, I sometimes had _____ to visit London on business.   A. opportunity    B. possibility    C. occasion    D. chance
下面表达准确、没有语病的一项是          (    ) A
下面表达准确、没有语病的一项是          (    ) A.温家宝指出,我国首次探月工程的圆满成功,使中华民族千年的奔月梦想开始变为现实,

最新题目