Final answer:
Without a centrosome, cells would struggle to organize chromosomes before cell division, as the centrosome is critical for proper spindle fiber formation during mitosis.
Step-by-step explanation:
Without a centrosome, cells would not be able to organize chromosomes before cell division. The centrosome is crucial for mitosis, as it serves as the main microtubule organizing center (MTOC) and regulates the formation of the spindle fibers that are essential for separating and pulling the duplicated chromosomes to opposite ends of the cell during cell division. Although some cells can still divide without a centrosome, it plays a central role in ensuring that cell division is performed efficiently and correctly.