Which statement best describes cancer cells? They grow as a single layer of cells. They cease to reproduce after 20-50 mitotic divisions. They reproduce only when needed to replace missing cells. They are not regulated by contact inhibition.

They are Not regulated by contact inhibition. The other 3 options are not characteristics of a cancer cell. Cancer cells have unlimited cell division, no anchorage dependent inhibition, no contact inhibition, and forms tumors - hence they don't form a single layer of cells