Animal cells only have a cell membrane, whereas plant cells have both a cell membrane and a _______

Options

A. cell mambrane
B. cell wall
C. nuclear membrane
D. cellulose

Answer

**Step-by-Step Solution:**

1. **Identify the Components of Animal and Plant Cells**:
- Animal cells are characterized by having only a cell membrane.
- Plant cells, on the other hand, have both a cell membrane and an additional structure.

2. **Determine the Additional Structure in Plant Cells**:
- The additional structure that is present in plant cells but absent in animal cells is the cell wall.

3. **Understand the Composition of the Cell Wall**:
- The cell wall in plants is primarily made of cellulose, which is a complex carbohydrate.

4. **Recognize the Function of the Cell Wall**:
- The cell wall provides structural support and protection to the plant cells. It helps maintain the shape of the cell and protects it from mechanical and osmotic stress.

5. **Conclude the Answer**:
- Therefore, the blank in the statement "Animal cells only have a cell membrane, whereas plant cells have both a cell membrane and a _______" should be filled with "cell wall."

**Final Answer**: Animal cells only have a cell membrane, whereas plant cells have both a cell membrane and a **cell wall**.

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