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一、氧的利用系统为维持生命活动,活的机体必须从环境获得自由能。高等动物主要通过呼吸用分子氧(O_2)氧化食物中的有机物,释放贮存在这些物质中的部分能量。虽然从反应的起点和终点看,这种释能过程与燃烧相同,但动物的能量代谢与热机不同,具有以下特点:(一)释能反应在相对低温下进行,而且维持基本恒温。为此,在动物体内利用酶促
First, the use of oxygen system To maintain life activities, living organisms must be free from the environment. Higher animals mainly oxidize organic matter in foods by breathing with molecular oxygen (O 2), releasing part of the energy stored in these substances. Although the process of energy release is the same as that of combustion when viewed from the beginning and end of the reaction, the energy metabolism of the animal differs from that of the engine in that it has the following characteristics: (1) The energy release reaction is carried out at a relatively low temperature while maintaining a substantially constant temperature. To this end, the use of enzymes in animals