Define enzymes ? What is the most important reason for their specific action ?

Explanation

### Step-by-Step Solution:

1. **Definition of Enzymes**:
- Enzymes are biological catalysts that accelerate chemical reactions in living organisms. They are a group of biomolecules that facilitate these reactions, allowing them to occur at a much faster rate than they would without the presence of the enzyme.

2. **Characteristics of Enzymes**:
- Enzymes are typically water-soluble proteins.
- They have a high molecular mass, usually ranging from 15,000 to 100,000 daltons.
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