问题
读图填空题
食品中不经过消化,可以直接被吸收的营养成分是 、 和 。
答案
水 无机盐 维生素
食物中的淀粉、脂肪和蛋白质都是分子大、结构复杂的有机物,进入消化系统后,转变成分子比较小、简单的、易溶于水的物质才能被人体吸收利用,而水、无机盐、维生素分子小、结构简单,不需消化,可以直接被吸收。
食品中不经过消化,可以直接被吸收的营养成分是 、 和 。
水 无机盐 维生素
食物中的淀粉、脂肪和蛋白质都是分子大、结构复杂的有机物,进入消化系统后,转变成分子比较小、简单的、易溶于水的物质才能被人体吸收利用,而水、无机盐、维生素分子小、结构简单,不需消化,可以直接被吸收。
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