Question

Explain the property of contact inhibition and its effect on normal human cells and cancerous cells. 

Answer 1

Normal cells have a feature called contact inhibition, which controls their growth and division when they come into contact with other cells. It guarantees ordered tissue growth and avoids overcrowding. 

1. Effect on Normal Human Cells:
   1. When normal cells come into contact with one another, contact inhibition prevents the cells from dividing.
   2. This keeps unnecessary tissue from forming and guarantees regulated cell growth.
2. Effect on Cancerous Cells:
   1. Contact inhibition is lost in cancerous cells.
   2. Even after contact, these cells divide uncontrolled, resulting in tumor development and abnormal tissue growth.