Cells move around the body using cellular extensions of the plasma membrane like cilia and flagellum. They take the help of fibres outside the cell to provide anchorage. These extensions are made of microtubules, sliding against each other to produce a back and forth motion. These microtubules are a part of the cytoskeleton which will be discussed shortly. Within the cells, motor proteins attach to the receptors on organelles and use their ‘feet’ to ‘walk’ them along the fibers of cytoskeleton to their required location. Source: Campbell Biology, 12th edition These motor proteins consume ATP (Adenosine Triphosphate) which is the source of energy at the cellular level. It is the energy currency of the cell as it provides readily releasable energy due to breaking of bonds between second and third phosphate groups. Now that we have understood the mechanism for cell locomotion, let’s understand more about the cytoskeleton and how its elements aid in the process. Exis...