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【单选题】
下列说法正确的是（ ）A.
在0.1mol?L -1 Na 2 CO 3 溶液中，加两滴酚酞显浅红色，微热后红色加深，说明盐类水解反应是吸热反应
B.
已知MgCO 3 的K sp =6.82×l0 -6 ，则在含有固体MgCO 3 的MgCl 2 、Na 2 CO 3 溶液中，c（Mg 2+ ）=c（CO 3 2- ），且c（Mg 2+ ）?c（CO 3 2- ）=6.82×10 -6 mol 2 ?L -2
C.
等体积、pH都为3的酸HA和HB分别与足量的锌反应，HA放出的氢气多，说明酸性：HA＞HB
D.
已知： 共价键 C-C C=C C-H H-H 键能/kJ?mol -1 348 610 413 436 上表数据可以计算出 （g）+3H 2 （g）→ （g）的△H
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皮皮学刷刷变学霸
举一反三
【单选题】In hepatocytes, the [NADPH]/[NADP + ] ratio is very high (~___) in the cytosol, furnishing a strongly reducing environment for the reductive synthesis of fatty acids and other biomolecules.
A.
45
B.
55
C.
65
D.
75
【单选题】Individuals with a defect in glucose 6-phosphate dehydrogenase produce NADPH for the synthesis of fatty acids owing to the presence of which one of the following enzymes?
A.
Malic enzyme
B.
Fatty acid synthase
C.
Acetyl-CoA carboxylase
D.
C9-desaturase
E.
Citrate lyase
【单选题】The reducing equivalentsfor synthesis of fatty acids and cholesterol mainly come from
A.
glycolysis pathway
B.
citric acid cycle
C.
pentose phosphate pathway
D.
f atty acid oxidation
E.
reaction catalyzed by m alic acid
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