when penicillin was first introduced, it was was very effective in destroying most of the bacteria that was cause gonorrhea. Today, certain varieties of this bacterium are the resistant to penicillin. Which statement best explains the appearance of these resistant varieties?

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