Question:

How is a cancerous cell different from a normal cell?

CBSE CLASS XII

Updated On: Sep 30, 2023

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Solution and Explanation

-	Normal cell	-	Cancerous cell
1.	Normal cells show the property of contact inhibition. Therefore when these cells come into contact with other cells they stop dividing.	1.	Cancerous cells lack the property ofcontact inhibition. Therefore they continue to divide thereby forming a mass of cells or tumor.
2.	They undergo differentiation after attaining a specific growth.	2.	They do not undergo differentiation.
3.	These cells remain confined at a particular location.	3.	These cells do not remain confined at a particular location. They move into neighboring tissues and disturb its function.

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Notes on human health and disease

Concepts Used:

Cancer

Cancer is a term used to derive the diseases caused due to cellular irregularities. The disease can begin in any of the trillion cells that form the human body. When these cells get old or damaged, then they die and are replaced by new cells. However, this process is deranged when cancer arises. When cells should die, they live on, and new cells grow when they aren't needed.

These excess cells can divide endlessly, potentially forming tumors. Changes in genes that hold how our cells function, particularly how they grow and split, cause cancer. Accelerating cell division rates or standing in normal control can result in gene mutations. The genes sometimes cause cancer we obtain from our parents.

Types of Cancer:

There are many types of cancer. They are named for the organs or tissues where cancer evolves. Here are some categories such as;

Carcinoma
Sarcoma
Melanoma
Lymphoma and Leukaemia