Final answer:
True, cancer is indeed a disease characterized by unregulated cell division often due to DNA damage, leading to the potential formation of a tumor or blood cancer like leukemia.
Step-by-step explanation:
True, cancer is a disease of cell division. It occurs when the cell cycle is no longer regulated, often due to DNA damage. The damage can be caused by various factors, including exposure to carcinogens like radiation or toxic chemicals. This unchecked division results in mutations that disrupt the genes responsible for regulating the cell cycle. As a result, this leads to rapid division of cancerous cells, which can form a mass known as a tumor. Such tumors consume nutrients and space needed by normal cells, damaging tissues and organs, and can be life-threatening if not treated. When this uncontrolled division takes place in the bone marrow, it produces abnormal and nonfunctional blood cells without forming a distinct tumor, leading to blood cancers like leukemia.