问题题干答案解析相关问题热门问题最新问题

问题详情

细胞膜内外正常的Na+和K+浓度差的形成和维持是由于（　　）

A、膜在安静时对K+通透性大

B、膜在兴奋时对Na+通透性增加

C、K+易化扩散的结果

D、膜上Na+-K+泵的作用

E、Na+易化扩散的结果

时间：2021-07-17 20:25 关键词：学历教育成人高考 2009年成人高考《医学综合(专升本)》真题

答案解析

D

相关问题

boost的意思是:help or encourage to increase or improve
eloquent的意思是:fluent or persuasive in speaking or writing
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
Mainly east 3 or 4 partly cloudy to overcast occasional rain（）slowly south moderate or good.
（）any case or suspected case of quarantinable disease，or any case of eruptive disease or any death be discovered，the local quarantine officer must be notified immediately．