| Consider the following statements with reference to spread of cancer in human body. |
| 1. Normal cells show a property called contact inhibition by virtue of which contact with other cells inhibits their uncontrolled growth. |
| 2. Cancer cells will not have the property of contact inhibition. As a result of this, cancerous cells just continue to divide giving rise to masses of cells called tumours. |
| 3. Metastasis, the spread of a cancer from one organ or part to another non-adjacent organ or part, is the most feared property of malignant tumours. |
| 4. Cancer causing agents are called as carcinogens. |
| Which of the statements given above are correct? |
A) 1 and 2
B) 1, 2 and 3
C) 3 and 4
D) (d) All of these
Correct Answer: D
Solution :
[d] Normal cells show a property called contact inhibition by virtue of which contact with other cells inhibits their uncontrolled growth. Cancer cells appears to have lost this property. As a result of this, cancerous cells just continue to divide giving rise to masses of cells called tumours. Tumours are of two types: Benign and Malignant. Benign tumours normally remain confined to their original location and do not spread to other parts of the body and cause little damage. The malignant tumours, on the other hand, are a mass of proliferating cells called neoplastic or tumour cells.
You need to login to perform this action.
You will be redirected in
3 sec
