Question

"Treadmilling" refers to:

a. Successive rounds of growth, catastrophe, shrinkage, and rescue in a microtubule
b. Process by which intermediate filaments are twisted into a rope-like structure
c. The process in which loss of tubulin at one end is balance by gaining of tubulin subunits at the other end, thus keeping the microtubule length constant
d. The process by which the ARP complex triggers branch points for actin assembly to push the leading edge of the cell forward
e. The process by which actin fibers or microtubules grow quickly at their plus ends but slowly at their minus ends.

Answer 1

Treadmilling refers to the process of balancing tubulin loss and gain in microtubules, keeping the length constant. Microtubules grow by adding tubulin subunits and perform important functions in the cell.

Step-by-step explanation:

Treadmilling refers to the process in which loss of tubulin at one end is balanced by gaining of tubulin subunits at the other end, thus keeping the microtubule length constant. Microtubules are small hollow tubes that grow by adding more tubulin subunits, like adding additional links to a chain. They help the cell resist compression, provide a track along which vesicles move through the cell, and pull replicated chromosomes to opposite ends of a dividing cell.