Question

Researchers investigating the mechanism of vesicular transport assembled a cell-free system that included microtubule tracks, vesicles, and ATP. However, they observed no movement of transport of vesicles in this system. What were they missing?

Answer 1

motor proteins

Step-by-step explanation:

In order for there to be cell motility, a motor protein is required to interact with the cytoskeleton. Once one end of a motor protein attaches to the microtubule of the cytoskeleton and the other end is attached to the vesicle, the motor protein can "walk along" the microtubule tracks.

Answer 2

Motor proteins

Step-by-step explanation:

Motor proteins are essential for the active vesicular transport of proteins and secretory vesicles through the hydrolysis of ATP.