How do vesicles move inside of a cell?

Answer:

c. They are carried by motor proteins using the cytoskeleton as a "roadway"

Explanation

The cytoskeleton serves as a crucial structural component of the cytoplasm. It acts as a supportive framework, bolstering the cytoplasm for protection and facilitating intercellular movement and migration.

Composed of actin filaments, intermediate filaments, and microtubules, it provides three main structural and functional frameworks.

Motor proteins act as molecular motors vital for muscle contraction, movement, and transporting materials within the cytosol. These proteins derive energy from the hydrolysis of ATP to ADP, which powers their motility.

This means that vesicles are transported across the cytosol by cytoskeleton motors using the cytoskeleton as pathways, while hydrolyzing ATP to produce the required mechanical energy for movement.

Answer:

C. They are carried by motor proteins using the cytoskeleton as a "roadway"

Explanation:

Vesicles hitch a ride on molecular motors such as kinesin or myosin, moving along the cytoskeleton until they reach their intended location, where they then fuse with the target membrane or organelle. Typically, vesicles progress from the ER to the cis Golgi, followed by movement from the cis to the medial Golgi, from the medial to the trans Golgi, and finally from the trans Golgi to the plasma membrane or other cellular compartments. While the predominant direction is forward, there are also vesicles that return from the Golgi to the ER, carrying proteins that should have remained in the ER (e.g., PDI) that were inadvertently enclosed in a vesicle.