Which structure does a cell need for movement ?

Options

A. Microfilaments
B. Microtubules
C. Intermediate filaments
D. All of these

Answer

To determine which structure a cell needs for movement, let's break down the information step by step.

### Step 1: Identify the Cell Structures
Cells contain various organelles and structures that contribute to their function. Among these, we need to focus on those specifically related to movement.

### Step 2: Understand the Role of the Cytoskeleton
The cytoskeleton is an elaborate network of filamentous protein structures within the cytoplasm of a cell. It consists of three main components:
- **Microfilaments**
- **Microtubules**
- **Intermediate filaments**

These structures provide mechanical support, maintain the shape of the cell, and are crucial for motility.

### Step 3: Recognize the Importance of Flexibility
For a cell to move, it must have some degree of flexibility. If the cytoskeleton were completely rigid, it would hinder movement. The cytoskeleton allows for the dynamic changes in shape necessary for cell motility.

### Step 4: Connection to Flagella
In cells that exhibit movement through flagella, microtubules play a vital role. They are arranged in a specific manner within the flagella, facilitating the movement of the cell.

### Step 5: Conclusion
Based on the above points, we can conclude that the structures necessary for cell movement are part of the cytoskeleton, specifically microfilaments, microtubules, and intermediate filaments. Therefore, the correct answer to the question is:

**Answer: All of these (D)**