电导率传感器在“细胞质膜透性的模拟实验”中的应用  

Application of conductivity sensor in the simulation experimentof cytoplasmic membrane permeability

作　　者：詹琪芳 ZHAN Qifang(Luwan Senior High School,Shanghai 200023,China)

机构地区：[1]上海市卢湾高级中学,上海200023

出　　处：《生物学教学》2024年第8期63-65,共3页Biology Teaching

基　　金：上海市课外校外教育科学研究重点课题“基于跨学科项目化学习的高中课外数字化实验探究课程的开发实践”,No.Z202303;上海市大中小学教师学科研修基地教师专业发展实践研究项目“跨学科素养导向下生物学数字化实验项目式学习课程的设计实践”,No.DZXJD-2023-044。

摘　　要：在“细胞质膜透性的模拟实验”中,以NaCl、 NH_(4)Cl、 KCl等小分子盐类和大分子蛋白质为材料,利用其通过透析膜时产生的不同的电导率变化,运用数字化工具进行采集整理,并形成随时间变化的曲线图,使学生定量认识细胞质膜的选择透过性特点,为更好理解物质进出细胞质膜的方式奠定基础,培养建构数学模型的科学思维方式。In the simulation experiment of cytoplasmic membrane permeability,we use small molecule salts such as NaCl,NH_(4) Cl,and KCl and large molecule proteins as materials,employ digital tools to collect changes in conductivity produced when they pass through the dialysis membrane,and form a curve graph indicating the changes occurring as time passes.This experiment allows students to understand the selective permeability characteristic of cytoplasmic membranes by a quantitative means,which lays the foundation for a better understanding of the ways by which substances enter and exit cytoplasmic membranes and helps to foster a scientific way of thinking for building mathematical models.

关 键 词：细胞质膜透性 电导率传感器 模拟实验 

分 类 号：G633.91[文化科学—教育学]