单糖包括五碳糖和六碳糖
五碳糖有核糖(C5H10O5)和脱氧核糖(C5H10O4)
六碳糖有葡萄糖和果糖 化学式均为C6H12O6
一个是核糖,一个是脱氧核糖
五碳糖的示意图是五边形一个内角含有一个C
六碳糖的示意图是六边形一个内角含有一个C
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