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考点分析:1.有机化合物有机化合物:含有碳元素的化合物。无机化合物:不含碳元素的化合物。注意:①甲烷是最简单的有机化合物。②CO、CO2、CaCO3、H2CO3等一般看作无机化合物。2.食物中的主要营养成分人类为了维持生命,必须从食物中摄取一定数量的营养。糖类、油脂、蛋白质、维生素是食物中的重要有机物,是食物中的主要营养成分。注意:我们把食物中能够被人体消化吸收和利用的各种营养成分称为营养素。糖类、油脂、蛋白质、维生素、无机盐和水是人体必需的六大营养素。
Test points analysis: 1. Organic compounds Organic compounds: compounds containing carbon. Inorganic compounds: Carbon-free compounds. Note: ① Methane is the simplest organic compound. ② CO, CO2, CaCO3, H2CO3 and other general as inorganic compounds. 2. The main nutrients in food To keep alive, human beings must take a certain amount of nutrition from food. Sugar, fat, protein, vitamins are important organic matter in food and are the main nutrients in food. Note: We refer to various nutrients in food that are digested and utilized by the body as nutrients. Sugar, fat, protein, vitamins, inorganic salts and water are six essential nutrients for the body.