Which of the following statements correctly describes motor proteins?

Motor proteins play a crucial role in the intracellular transport system. They are specialized proteins that convert biochemical energy into mechanical work, which enables them to move along cellular structures such as microtubules and actin filaments. This movement is essential for transporting organelles, vesicles, and other cargo throughout the cell.

For example, kinesin and dynein are two types of motor proteins that facilitate transport along microtubules, helping to position organelles like the endoplasmic reticulum and Golgi apparatus at specific locations within the cell. This function is vital for maintaining cellular organization and responding to various cellular needs.

While the other statements refer to important cellular functions—such as providing structural support or assisting in cell division—they do not accurately describe the primary role of motor proteins. Hence, the correct choice highlights the specific function of motor proteins in the transport process within cells.