Microtubules are nucleated in cells with centrosomes in the vicinity of the centrosomes.Where do they nucleate in cells lacking centrosomes?
A)in the vicinity of the nucleolus
B)in the vicinity of the mitochondria
C)in the vicinity of the chromosomes
D)in the vicinity of the cell membrane
E)in the vicinity of the lysosomes

Question

Quizplus · Accepted Answer

In cells lacking centrosomes, microtubules can nucleate from a variety of locations, including the vicinity of chromosomes, Golgi apparatus, and plasma membrane. However, studies have shown that the primary location for microtubule nucleation in these cells is in the vicinity of the chromosomes. This occurs through the activity of various nucleation factors, including the protein TPX2, which helps to recruit and activate the gamma-tubulin ring complex, a key component of the microtubule nucleation machinery.

Microtubules Are Nucleated in Cells with Centrosomes in the Vicinity