Explain what is meant by :
(i) Biocatalyst

Explanation

**Step-by-Step Solution:**

1. **Definition of Biocatalyst**: A biocatalyst is a natural substance that accelerates biochemical reactions. It can be an enzyme or a hormone.

2. **Role in Biochemical Reactions**: Biocatalysts play a crucial role in speeding up the rate of biochemical reactions in living organisms. They lower the activation energy required for these reactions to occur.

3. **Types of Biocatalysts**: The most common types of biocatalysts are enzymes, which are proteins that facilitate various biochemical processes. Hormones can also act as biocatalysts by regulating metabolic pathways.

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