(2010. Jingan District the first mock exam) the following curves can correctly indicate the rule of human digestive enzymes. A. I and III B. II and IV C. I and IV D. II and III

(1) The optimum temperature of digestive enzyme in human body is about 37 ℃. Before the optimum temperature, the activity of digestive enzyme increases with the increase of temperature. After the optimum temperature is exceeded, the activity of digestive enzyme decreases with the increase of temperature, corresponding to the wrong curve Ⅱ and curve Ⅰ

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2. In the following curves, the law of human digestive enzyme action can be correctly expressed () A. I and III B. II and III C. I and IV D. II and IV
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