Which cell organelle is modified to form the acrosome? Name the chemical it secretes.

Explanation

### Step-by-Step Solution:

1. **Identify the Acrosome**: The acrosome is a specialized structure found at the anterior tip of the head of sperm cells (spermatozoa). It plays a crucial role in fertilization.

2. **Determine the Origin of the Acrosome**: The acrosome is derived from a specific cell organelle. In this case, it is modified from the **Golgi apparatus**. The Golgi apparatus is responsible for processing and packaging proteins and lipids, and in the case of sperm, it modifies to form the acrosome.

3. **Identify the Chemicals Secreted by the Acrosome**: The acrosome contains digestive enzymes that are essential for fertilization. The primary chemicals secreted by the acrosome are:
- **Hyaluronidase**: This enzyme helps in breaking down hyaluronic acid, which is part of the extracellular matrix surrounding the egg.
...