What is the Major Microtubule-Organizing Center in Animal Cells

Question

What is the major microtubule-organizing center in animal cells?
A) The γ-tubulin ring complex
B) The centrosome
C) The cell cortex
D) The primary cilium
E) The spindle pole body

Accepted Answer

The centrosome is the major microtubule-organizing center (MTOC) in most animal cells. The γ-tubulin ring complexes associated with the centrosome nucleate microtubules that emanate from the center of the cell toward its periphery.