Why is the structure of an antibody molecule represented as `H_(2)L_(2)` ? Name any two types of antibodies produced in a human body.

Explanation

To answer the question, we will break it down into two parts: explaining why the structure of an antibody molecule is represented as H₂L₂ and naming two types of antibodies produced in the human body.

### Step-by-Step Solution:

1. **Understanding the Representation H₂L₂**:
- Antibodies, also known as immunoglobulins, are composed of four polypeptide chains.
- These consist of **two heavy chains** (H) and **two light chains** (L).
- The representation H₂L₂ indicates that there are two heavy chains and two light chains in the structure of the antibody.
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