生物体彻底氧化1分子软脂酸能产生多少分子ATP?怎么算?

2025-03-16 16:00:32
推荐回答(3个)
回答1:

    129
  软脂酸氧化生成软脂酰辅酶A,软脂酰辅酶A有16个C,反应过后生成8个乙酰辅酶A。每个乙酰辅酶A经三羧酸循环生成12个ATP,一共96个。
  每生成一个乙酰辅酶A,同时生成1个FADH2和1个NADH。在生成8个乙酰辅酶A的过程中(最后一个不算)一共生成7个FADH2和7个NADH,呼吸链氧化生成35个ATP。
  开始时软脂酸变成软脂酰辅酶A的过程中耗去两个ATP,所以一共是96+35-2=129个。

回答2:

β-氧化每一轮回产生1个NADH,1个FADH2和1个乙酰CoA,乙酰CoA进入柠檬酸循环产生3个NADH,1个FADH2和一个GTP(相当于一个ATP)。乙酰CoA通过柠檬酸循环和氧化磷酸化或可产生ATP分子数1.5(FADH2)+3(NADH)X2.5+1(GTP)=10ATP。16碳的软脂酸β-氧化,经七个轮回,共产生8个乙酰CoA和7个NADH及FADH2,16碳的软脂酸8(乙酰CoA)X10(ATP)+7(NADH)X2.5(ATP)+7(FADH2)X1.5(ATP)+80+17.5+10.5=08ATP。软脂酸的活化过程消耗2分子ATP,最后为106ATP

回答3:

这个是生化问题 答案是106个 生物化学 王镜岩版的答案
其实只要记住一个公式就可以了 软脂酸是16C的 所以生成16的一半也就是8个乙酰辅酶A 再加(8-1)个NADH 和7个FADH2
然后 乙酰辅酶Ax10 加 NADHx2.5 加 FADH2x1.5 等于108 但是总反应要消耗2个ATP 所以再减2 就等于106
这个计算完全看C原子的个数 生成的乙酰辅酶A就是C原子个数的一半 而生成的NADH和FADH2就是一半再减一 然后计算就好
我也是这学期学的 马上要期末了才搞明白 望采纳(^_^)

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