水分运动的方式 Modes of water water Movement 团流 bulk flow 扩散 diffusion w water ●渗透 osmosIs potential Osmosis water molecule semiperme able membrane protein molecule between two compartments Simple diffusion ∵∴∴∵水分运动的方式 Modes of Water Movement z 团流 bulk flow bulk flow z 扩散 diffusion diffusion z 渗透 osmosis osmosis