维生素B2在体内黄素激酶和焦磷化酶的催化下转变成活性型的 和 ,是黄素酶的辅基,参与氧化还原反应。
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叶酸在体内叶酸还原酶的催化下转变为活性型的 ,是体内 酶的辅酶,携带 参与多种物质的合成。
叶酸和维生素Bl2缺乏与巨幼红细胞性贫血的关系如何?
Unit 6-2-1Which of the statement is NOT true about business plans?
A. They are very crucial to success.
B. They guarantee success of business.
C. They may be tedious and time-consuming.
D. They help business owners plan ahead.