试比较糖的有氧氧化与无氧氧化的异同点

2025-03-15 02:00:45
推荐回答(2个)
回答1:

1、糖无氧氧化反应部位是胞质,不需要氧的参与,有氧氧化发生在胞质和线粒体,需要氧气的参与。

2、糖无氧氧化反应终产物是乳酸,能量来源方式是底物水平磷酸化;有氧氧化终产物是二氧化碳和水,净生成30或32分子ATP,能量来源方式是底物水平磷酸化和氧化磷酸化;

3、糖无氧氧化反应关键酶有己糖激酶、磷酸果糖激酶-1、丙酮酸激酶三种,它是缺氧时获能的主要方式;

有氧氧化终关键酶分别是己糖激酶、丙酮酸激酶、丙酮酸脱氢酶复合体、柠檬酸合酶、α-酮戊二酸脱氢酶复合体、异柠檬酸脱氢酶,它是生理条件下获能的主要方式。

扩展资料:

糖的有氧氧化会生成ATP,给细胞提供能量。

葡萄糖在有氧条件下,氧化分解生成二氧化碳和水的过程称为糖的有氧氧化,并释放出能量。有氧氧化是糖分解代谢的主要方式,大多数组织中的葡萄糖均进行有氧氧化分解供给机体能量。

在糖的有氧氧化中的关键酶是:丙酮酸脱氢酶系、柠檬酸合酶、异柠檬酸脱氢酶,这三种酶在糖有氧氧化中起到关键作用。

回答2:

有氧呼吸就是有氧氧化,糖彻底氧化为无机物,放出大量能量。无氧呼吸就是无氧氧化,氧化不完全,大量能量储存在未完全分解的有机物中。

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