To properly determine which statement is supported by the evidence in your graphs, I would need to see those graphs with the specific data regarding enzyme activity in relation to temperature and pH. Since I cannot see the graphs, I will help you analyze each statement based on general principles of enzyme activity:
a. The enzyme is very active at approximately 42°C and within a pH range of 2 to 6.
- This could be true if the graph shows a peak in enzyme activity at 42°C and indicates activity in that pH range. Generally, most enzymes have an optimal temperature that is lower than this, often around human body temperature (37°C).
b. The enzyme works best in a pH range of 6 to 8 and at a temperature of approximately 37°C.
- This is a common range for many enzymes (like human enzymes), which typically operate well around neutral pH and around body temperature. If the graph shows maximum activity in this range, this statement is likely true.
c. The enzyme functions well at a temperature of 35°C and would be active at any pH value.
- While some enzymes may work at various pH levels, the concept of working well at any pH is generally not accurate, since most enzymes have specific optimal pH levels. If 35°C is shown to be effective but the pH affects the enzyme's activity, then this statement would not be supported.
d. The enzyme's activity is greatest at pH 7 and would not be affected by a change in temperature.
- This is usually not the case, as enzyme activity is often affected both by temperature and pH. If the graph indicates that activity varies significantly with temperature, this statement would not be accurate.
In summary, without the graphs, the most likely supported statement based on general enzyme behavior would be option b, as many enzymes operate best around pH 6-8 and a temperature near 37°C.
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