Final answer:
Centrosomes are microtubule-organizing centers containing centrioles that assure proper cell division, and they are duplicated to be inherited by daughter cells.
Step-by-step explanation:
A centrosome is a structure in animal cells that functions as a microtubule-organizing center. It contains two centrioles arranged at right angles to each other, each comprising of nine triplets of microtubules held together by accessory proteins. During cell division, centrosomes duplicate and each daughter cell receives one centrosome, ensuring that both cells have the necessary machinery to organize their microtubules.
The centromere is a region on a chromosome that becomes visible during cell division, where the two sister chromatids are held together. The kinetochore is a protein structure on the centromere where spindle fibers attach during mitosis to pull chromosomes apart.