What is the name given to that part of the enzyme where catalytic work is carried out?

Explanation

**Step-by-Step Solution:**

1. **Understanding Enzymes**: Enzymes are proteins that act as catalysts in biological systems. They accelerate chemical reactions without being consumed in the process.

2. **Role of Enzymes**: As biocatalysts, enzymes increase the rate of reactions in living organisms, making them essential for various biochemical processes.

3. **Identifying the Catalytic Part**: The question specifically asks for the part of the enzyme where the catalytic work occurs.

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