Lysozyme Wall H2O enters Lysis digests wall Membrane H2O enters H2O enters Lysozyme digests wall Protoplast Protoplasts原生质体 (b)In a solution containing an isotonic concentration of a solute such as sucrose,water does not enter the protoplast and it remains stable.等渗溶液中，水不进入原生质体，原生质体稳定.Protoplasts原生质体 (b) In a solution containing an isotonic concentration of a solute such as sucrose, water does not enter the protoplast and it remains stable.等渗溶液中, 水不进入原生质体, 原生质体稳定