生化反应之溶剂水课件.ppt

1、Chapter 2:Biomolecules in WateruBiological solvent:a medium for metabolic reactionsaquaporins:membrane channels for water transportuEssential buffer to regulate temperature and pH:high specific heat capacity and pH-regulating substances dissolved in it uParticipant in many biochemical reactions:phot

2、osynthesis and hydrolysis of ATP*較強 較弱 Forces:核間力 原子力 共價鍵 非共價鍵 重力 _ Structure:Structure:原子核原子 簡單化合物 生物巨分子 宇宙 簡單 複雜*共通特質：1.非共價2.可逆3.專一*PeptidesX-H:AX=Hydrogen bond donor N,O,S A=Hydrogen bond acceptor O,N冰為何浮在水上？Ice crystal:staticWater:dynamic breaking and forming Fig.2-5F=Q1Q2/er2 e:dielectric constantr:distance between the charge groupsDipole-DipoleIon-DipoleFig.2-6還有什麼因素讓鹽很容易溶於水？