Question

The initial growth of a microtubule depends on The quaternary form of tubulin High concentration of Cl- ions O A nucleating primer The ATP activation of the tail portion of the microtubule The ATP activation of the head portion of the microtubule

Answer 1

Option c, a nucleating primer

Microtubules are made up of tubulin proteins . Nucleation is the event in which there is initiation of microtubules formation occur.

In eukaryotes these uncertain typically stats in organelle MToc ( microtubule organization center)

While in plant this nuckeation process start in centrosome.