上帝充通大学 Shanghai Jiao Tong University Cytoplasmic membrane:细胞膜 a thin structure that completely surrounds the cell. Physical barrier separating inside of a cell from its outside environment..是细胞的物理屏障 Highly selective permeability barrier enabling a cell to concentrate specific metabolites and excrete waste materials.是细胞吸收营养物或排出废物的选 择透性屏障 Membrane PermeabilityShanghai Jiao Tong University Cytoplasmic membrane细胞膜 a thin structure that completely surrounds the cell. • Physical barrier separating inside of a cell from its outside environment. 是细胞的物理屏障 • Highly selective permeability barrier enabling a cell to concentrate specific metabolites and excrete waste materials. 是细胞吸收营养物或排出废物的选 择透性屏障 Membrane Permeability