Three of the following statements about enzymes are correct and one is wrong. Which one is wrong

Options

A. Enzymes required optimum pH for maximal activity.
B. Enzymes are denatured at high temperature but in certain exceptional organisms they are effective even at temperature `80^(@) - 90^(@)` C.
C. Enzyme are highly specific
D. Most enzyme are proteins but some are lipids .

Answer

To determine which statement about enzymes is incorrect, let's analyze each statement step by step:

1. **Statement 1**: "Enzymes require optimum pH for their maximum activity."
- **Analysis**: This statement is correct. Enzymes function best at a specific pH, known as the optimum pH. Deviations from this pH can lead to decreased enzyme activity.

2. **Statement 2**: "Enzymes are denatured at high temperature, but in certain exceptional organisms, they are even effective up to 80 to 90 degrees Celsius."
- **Analysis**: This statement is also correct. While most enzymes denature (lose their functional shape) at high temperatures, some extremophiles (organisms that thrive in extreme conditions) have enzymes that remain functional at very high temperatures.

3. **Statement 3**: "Enzymes are highly specific."
- **Analysis**: This statement is correct as well. Enzymes are known for their specificity; they catalyze specific reactions and are tailored to fit specific substrates, much like a key fits into a lock.

4. **Statement 4**: "Most enzymes are proteins, but some are lipids."
- **Analysis**: This statement is incorrect. While it is true that most enzymes are proteins, there are no enzymes that are lipids. However, some enzymes are RNA molecules known as ribozymes, which have catalytic activity.

**Conclusion**: The wrong statement is the fourth one, which claims that some enzymes are lipids.

---