Passage I
Enzymes catalyze (speed up) chemical reactions. The pancreas (a digestive organ) secretes 4 types of digestive enzymes—amylase, nuclease, lipase, and protease. Each type of enzyme catalyzes the breakdown of a different type of molecule in the digestive tract (see Table 1).
An enzyme's activity can be affected by pH. Figure 1 shows, for each type of enzyme listed in Table 1, how relative activity (percent of the greatest measured activity) varies with pH.
2. According to Figure 1, as the pH increases from 7 to 9, the relative activity for amylase:
Your Answer is
Correct Answer is F
Explanation
In the range of PH 7~9 in Figure 1, the vertical axis of amylase decreases, choose F