Asuffix that is added to a root or combining form that produces a medical term that describes a symptom or sign of a disease process is:

This would be a diagnostic suffix. This allows for the person researching the term to understand the background of the disease. It would also allow for the disease to be diagnosed more accurately by showing how it has an effect on the entire body.

The answer to this will be from your lab notes/procedure. it would be best to ask another student who participated in the lab as we do not know what was done, what enzyme or if the temperature is celsius or fahrenheit. if i were to guess though i'd say the rate stopped due to enzyme denturing at high temperature