Question

The presence of a cancerous mass in a person's lung is a direct result of _ a the crowding of released antigens. b the uncontrolled division and growth of abnormal cells. c meiotic division of normal cells. d production of excessive protein inhibitors.

Answer 1

The presence of a cancerous mass in a person's lung is a direct result of **b) the uncontrolled division and growth of abnormal cells.** Cancer occurs when the mechanisms that normally regulate cell division and growth fail, leading to the formation of tumors.