Final answer:
The microtubule-organizing center (MTOC) is a vital structure in a cell that organizes and anchors microtubules. In animal cells, the MTOC is known as the centrosome, which contains centrioles. The centrosome plays a crucial role in cell division and the formation of flagella and cilia.
Step-by-step explanation:
The microtubule-organizing center (MTOC) is a structure that is responsible for organizing and anchoring microtubules within a cell. In animal cells, the MTOC is called the centrosome and it contains a pair of centrioles. Each centriole consists of nine triplets of microtubules arranged in a cylindrical shape. The centrosome is involved in various cellular processes such as cell division and the formation of flagella and cilia.