Name one structure present only in animal cells.

Explanation

### Step-by-Step Solution:

1. **Understanding Cell Types**: Recognize that animal cells are a type of eukaryotic cell, which means they have a true nucleus and various membrane-bound organelles.

2. **Identifying Unique Structures**: Differentiate between structures found in both animal and plant cells and those that are unique to animal cells.

3. **Naming Unique Structures**: Identify the two major structures that are present only in animal cells:
- **Centrosome**: This structure is involved in organizing microtubules and is crucial for cell division.
...