Which of the following statement is not correct ?

Options

A. The power of enzymes is incredible indeed
B. Inorganic catalysts do not work efficiently at high temperatures and high pressures
C. Almost all enzymes are proteins
D. Zinc is a cofactor for the proteolytic enzyme carboxypeptidase

Answer

To determine which statement is not correct, let's analyze each statement one by one:

1. **Statement 1**: "The power of the enzyme is incredible indeed."
- This statement is correct. Enzymes are biological catalysts that significantly increase the rate of chemical reactions in biological systems.

2. **Statement 2**: "Inorganic catalysts do not work efficiently at high temperature and high pressure."
- This statement is incorrect. Inorganic catalysts can often function effectively at high temperatures and pressures. They are not as sensitive to these conditions as enzymes, which typically have optimal conditions for activity.

3. **Statement 3**: "Almost all enzymes are proteins."
- This statement is correct. While most enzymes are proteins, there are exceptions like ribozymes, which are RNA molecules that can catalyze reactions.

4. **Statement 4**: "Zinc is a co-factor for the proteolytic enzyme carboxypeptidase."
- This statement is correct. Zinc acts as a co-factor for many enzymes, including carboxypeptidase, which is involved in protein digestion.

Based on the analysis, the statement that is not correct is **Statement 2**: "Inorganic catalysts do not work efficiently at high temperature and high pressure."

### Step-by-Step Solution:
1. Identify each statement provided in the question.
2. Analyze the truthfulness of each statement based on biological principles.
3. Conclude which statement is incorrect based on the analysis.