Question

Which of the following statements are correct?

• A. Normal cells show a property of contact inhibition
• B. Cancer cells show contact inhibition
• C. Contact inhibition controls uncontrolled growth of cells
• D. Contact inhibition leads to uncontrolled growth of cells

Answer 1

Answer: (A), (C)

The correct options are
A Normal cells show a property of contact inhibition
C Contact inhibition controls uncontrolled growth of cells

Normal cells pass through a limited number of cell divisions before they die. Normal cells,when placed on a tissue culture dish, proliferate until the surface of the dish is covered by a single layer of cells just touching each other. Then mitosis ceases. This phenomenon is called contact inhibition. Cancer cells show no contact inhibition. They proliferate indefinitely, having uncontrolled growth and give rise to a mass of cells called tumour.