Which one of the following is not a property of cancerous cells whereas the remaining three are ?
- They do not remain confined in the area of formation
- They divide in an uncontrolled manner
- They compete with normal cells for vital nutrients
- They show contact inhibition
Answer
(4) They show contact inhibition
Solution
As per NCERT, normal cells show contact inhibition — contact with other cells inhibits their uncontrolled growth. Cancer cells appear to have lost this property.
⇒ Cancer cells divide in an uncontrolled manner, compete with normal cells for vital nutrients, and reach distant sites through blood (metastasis).
∴ Showing contact inhibition is not a property of cancerous cells.
Answer: (4)