Aqueous Individual units are cylindrical (cross-section of head equals that of side chain) 更 o00000000000 Bilayer Liposome b
Carbohydrate side chain of glycolipid Phospholipid bilayer Glycoprotein Hydrophobic Carbohydrate side region chains of glycoproteins Hydrophilic region Plasma membrane egra membrane protein Peripheral membrane rotein Nucleus Cytoplasm
Exterior Peripheral protein Oligosaccharide Glycoprotein Glycolipid Integral protein 0 9 Leaflets Phospholipid bila Hydrophobic core tails Phospholipid Cytosol Integral protein Hydrophilic polar Peripheral proteins head
细胞膜的物质转运 细胞膜是半透性的屏障 从环境摄取营养物质,向环境排出代谢 废物 维持细胞的容积、形态、渗透压、电解 质浓度和膜电位,为细跑的生理活动提供 适宜的环境
二 细胞膜的物质转运 细胞膜是半透性的屏障 从环境摄取营养物质，向环境排出代谢 废物 维持细胞的容积、形态、渗透压、电解 质浓度和膜电位，为细胞的生理活动提供 适宜的环境
小分子和离子跨膜运输的三种方法 transported molecule channel carrier protein rotein lipid electrochemical gradient simple channel ca irri diffusion mediated mediated diffusion diffusion PASSIVE TRANSPORT ACTIVE TRANSPORT (FACILITATED DIFFUSION) 简单扩散 易化扩散 主动运输
小分子和离子跨膜运输的三种方法 简单扩散 易化扩散 主动运输 浓 度 梯 度