enzyme action的用法和样例：
例句
- As one of the flavoring components and the important substance to barm cell formation, carboxylic acids are helpful for enzyme action.
啤酒中的有机酸是构成酵母细胞组织的重要物质，有利于酶作用，是组成啤酒风味物质成分之一。 - Folate is a cofactor for this enzyme, which is part of the pathway of homocysteine metabolism in cells.
叶酸为此酶作用后的产物，同时此酶也是细胞内同型半胱胺酸的部分代谢去路。
