Question

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.

Explanation:

Normal cells stop growing when they come in contact with other cells (contact - inhibition). Cancer cells lack this regulation and continue to grow and divide uncontrollably. They do not grow as a single layer, can reproduce indefinitely, and are not regulated by normal cell - cycle controls like contact inhibition.

Answer:

They are not regulated by contact inhibition.