Osmosis is the passage of water from a region of high water concentration through a semi-permeable membrane to a region of low water concentration. .My question is why high water potential flows water to low water potential. What makes this occurs ? Also, does enzyme still works after being denatured. For an example, amylase is turn starch to maltose. After amylase is denatured, can it still react with other substances( i know it cannot react with starch)?