What is the outermost layer found in the plant and animal cell?

Explanation

**Step-by-Step Solution:**

1. **Identify the Cells**: Understand that we are discussing two types of cells: plant cells and animal cells.

2. **Outermost Layer in Plant Cells**: The outermost layer of a plant cell is called the **cell wall**. This structure provides support and protection to the cell. It is primarily composed of **cellulose**.

3. **Outermost Layer in Animal Cells**: In contrast, the outermost layer of an animal cell is known as the **plasma membrane** (or cell membrane). This membrane is composed of a **lipid bilayer** with embedded proteins, often referred to as **lipoprotein**.

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