Question

Give reasons-

The cancer cells do not require extracellular growth factors

Answer 1

Cancer cells do not need any external signals or growth factors to multiply.

Normally, every cells of the body require hormones and other molecules to grow and divide. But cancer cells have the ability to grow without these external factors. They can multiply themselves by producing these signals themselves known as autocrine signalling. Non cancerous cells are very controlled but in cancer cells, these processes are deregulated because the proteins that control them are altered It causes increased growth and cell division of the cancer cells.