问题
单项选择题 A1/A2型题
乳酸脱氢酶在骨骼肌中主要是催化生成()
A.丙酮酸
B.乳酸
C.3-磷酸甘油醛
D.3-磷酸甘油酸
E.磷酸烯醇式丙酮酸
答案
参考答案:B
解析:乳酸脱氢酶催化的反应为可逆反应,丙酮酸和乳酸既是底物又是产物,在骨骼肌中往往为缺氧环境,产物向乳酸方向进行。
乳酸脱氢酶在骨骼肌中主要是催化生成()
A.丙酮酸
B.乳酸
C.3-磷酸甘油醛
D.3-磷酸甘油酸
E.磷酸烯醇式丙酮酸
参考答案:B
解析:乳酸脱氢酶催化的反应为可逆反应,丙酮酸和乳酸既是底物又是产物,在骨骼肌中往往为缺氧环境,产物向乳酸方向进行。
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My sister is twenty-two this year. She is now a worker in a factory (工厂). The factory is far from our home, so she gets up early every morning, and then she goes to work by bus. At about seven thirty, she gets to the factory. She works very hard. Everyone likes her very much and says she is a good worker. She has lunch in the factory. She often plays table tennis after lunch. In the evening, she learns English at home. Her English is very good. She sometimes helps me with my English. I like her very much. | ||||||||||
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