13.2 Carbohydrates give structure and energy Carbohydrates are molecules of carbon, hydrogen and oXygen produced by plant through photosysthesis(光 合作用) Glucose:葡萄糖2 CH2OH Saccharide:糖类 dH CH2OH · Fructose:果糖 Glucose Fructose13.2 Carbohydrates give structure and energy • Carbohydrates are molecules of carbon, hydrogen and oxygen produced by plant through photosysthesis (光 合作用). • Saccharide: 糖类 • Glucose: 葡萄糖 • Fructose: 果糖 H O OH OH H H OH H OH CH2OH H O CH2OH HO H OH OH H H CH2OH Glucose Fructose Honey