Question

How to differentiate normal cells and cancer cells?

Answer 1

Normal cells stop growing (reproducing) when enough cells are present. For example, if cells are being produced to repair a cut in the skin, new cells are no longer produced when there are enough cells present to fill the hole; when the repair work is done. In contrast, cancer cells don’t stop growing when there are enough cells present. This continued growth often results in a tumor (a cluster of cancer cells) being formed. Each gene in the body carries a blueprint that codes for a different protein. Some of these proteins are growth factors, chemicals that tell cells to grow and divide. If the gene that codes for one of these proteins is stuck in the “on” position by a mutation (an oncogene)—the growth factor proteins continue to be produced. In response, the cells continue to grow.


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Answer 2

Answer:

Normal cells:-

• Normal cells reproduce themselves and then stop when enough cells are present.
• Normal cells mature.
• Normal cells have the property of contact inhibition.

Cancer cells:-

• Cancer cells reproduce rapidly before the cells have had a chance to mature.
• Cancer cells grow rapidly and divide before cells are fully mature.
• Cancer cells do not have the property of contact inhibition.