Enzyme have

Options

A. same `pH` and tempeature optiam
B. same ph but different temperature optima
C. different ph but same temperature optima
D. all wrong.

Answer

To answer the question "Enzymes have," we need to analyze the characteristics of enzymes regarding their pH and temperature optima.

### Step-by-Step Solution:

1. **Understanding Enzymes**: Enzymes are biological catalysts that speed up chemical reactions in living organisms. They are crucial for various biochemical processes.

2. **Temperature Optima**: The activity of enzymes generally increases with temperature. Most enzymes in the human body function optimally at around 37 degrees Celsius. This means that the temperature optimum is relatively consistent across different enzymes.

3. **pH Optima**: The pH at which an enzyme operates best can vary significantly. Each enzyme has a specific pH range where it is most effective. For example:
- Enzymes in the stomach (like pepsin) work best at a low pH of around 2.2.
- Enzymes in the small intestine (like trypsin) function best at a higher pH of around 7.5.

4. **Conclusion**: Given that enzymes can have different pH optima but typically share a similar temperature optimum, the correct answer to the question is: "different pH but same temperature optima."

### Final Answer:
Enzymes have different pH but the same temperature optimum.