右图示突触的亚显微结构，a、d分别表示两个神经元的局部。下列与

右图示突触的亚显微结构，a、d分别表示两个神经元的局部。下列与此相关的表述中正确的是

A．图中①②③合称为突触小体，是神经元树突的末端

B．兴奋由b传至c的过程中，①处膜外电流方向是b→c

C．经④释放的递质必然引起神经元d的兴奋

D．③内的递质只能经④释放再作用于⑥

答案

相关题目

下图表示叶绿体膜结构上磷酸转运器的运转机制，请据图回

下图表示叶绿体膜结构上磷酸转运器的运转机制，请据图回答问题：（1）请描述叶绿体内膜的大致结构＿＿＿＿＿＿＿。（2）CO2以＿＿＿＿＿＿＿方

The big red American car was much too wide for an English country road． When J

The big red American car was much too wide for an English country road． When Jack saw it coming toward him, he stopped his own car at the side of the road to make room for it to past．The American

Her sister has become a lawyer, _______ she wanted to be. A. who B. that C

Her sister has become a lawyer, _______ she wanted to be. A. who B. that C. what D. which

济宁市能源科研所在利用植物秸秆生产燃料酒精的研发中已

济宁市能源科研所在利用植物秸秆生产燃料酒精的研发中已取得突破性进展，其大致流程是：秸秆→糖液→酒精，从糖液到酒精利用的微生物是酵母菌

_______ homework did we have to do that we had no time to take a rest.[]

_______ homework did we have to do that we had no time to take a rest.[] A. So much B. Too much C. Too little D. So little

阅读下面这两首诗，然后回答问题。雨雪曲江总① 雨雪隔

阅读下面这两首诗，然后回答问题。雨雪曲江总① 雨雪隔榆溪②，从军度陇西③。绕阵看狐迹，依山见马蹄。天寒旗彩坏，地暗鼓声低。漫漫愁云起

0.1 mol某元素的单质直接跟氯气反应后，质量增加7.1 g，这种

0.1 mol某元素的单质直接跟氯气反应后，质量增加7.1 g，这种元素是( ) A．Mg B．Na C．Al D．Fe

热带雨林主要分布在赤道南北两侧，就像若干块翡翠串成的

热带雨林主要分布在赤道南北两侧，就像若干块翡翠串成的“绿色腰带”环绕地球，被称为“地球之肺”。据此回答下列有关问题：（1）写出世界上除

右图示突触的亚显微结构，a、d分别表示两个神经元的局部。下列与

答案

相关题目

最新题目