To accurately determine which statement is supported by the evidence in the graphs regarding enzyme activity, we would typically look at the trends shown in the graphs, particularly focusing on temperature and pH effects on enzyme activity. However, since I don't have access to the specific graphs you're referring to, I can help you evaluate each statement based on common knowledge about enzyme activity:
A. The enzyme is very active at approximately 42°C and within a pH range of 2 to 6. - Most enzymes have optimal temperature ranges typically around 37°C (body temperature for humans) and work best within a specific pH range that varies by enzyme. A temperature of 42°C is often too high for many enzymes, leading to denaturation.
B. The enzyme functions well at a temperature of 35°C and would be active at any pH value. - Most enzymes do not function well at extreme pH levels. Each enzyme has an optimal pH range, so saying it would be active at any pH value is too broad.
C. The enzyme works best in a pH range of 6 to 8 and at a temperature of approximately 37°C. - This aligns with the behavior of many enzymes that are active in physiological conditions, making it plausible if it matches the data shown.
D. The enzyme's activity is greatest at pH 7 and would not be affected by a change in temperature. - While pH 7 is neutral and many enzymes are active around this pH, all enzymes are affected by temperature changes; stating no effect is incorrect.
Given this analysis, the most plausible statement that is generally true for many enzymes, if it aligns with the data in your graphs, would be C. The enzyme works best in a pH range of 6 to 8 and at a temperature of approximately 37°C.
To confirm, please check if the data from your graphs matches these specific temperature and pH values.