ACT Science — Data Representation — Drill 2

About This Drill

ACT Science — Data Representation — Drill 2 is a Science practice drill covering Data Representation. It contains 5 original questions created by Brian Stewart, a Barron's test prep author with over 20 years of tutoring experience.

ACT Data Representation questions require accurate reading and comparison of experimental figures. This drill uses graphs of pepsin and trypsin activity across temperature and pH ranges, asking you to identify optima, compare enzymes, and assess the validity of a student's conclusion.

Questions in This Drill

1. According to Figure 1, at which temperature was pepsin activity the highest?
2. According to Figure 2, what is the optimal pH for trypsin?
3. Based on Figure 1, which of the following best describes pepsin activity from 37°C to 60°C?
4. At pH 4, approximately how much greater was pepsin activity than trypsin activity, according to Figure 2?
5. A student claims that at 60°C, both enzymes have lost most of their activity compared to their respective peaks. Is this claim supported by Figure 1?