Exercise: Enzymes, Temperature, and pH Data Table: Enzymes and Temperature. Lactase Tube Temperature (°C) Time (minutes) Glucose Concentration 5 minutes 100 Cold 5 10 minutes 100 15 minutes 100 20 minutes 100 Room 18 5 minutes 500 10 minutes 250 15 minutes 500 20 minutes 500 Hot 103 […]