1
Question
Cancerous cells continue to divide and give rise to a mass of cells. This is due to ____________.
Cancerous cells continue to divide and give rise to a mass of cells. This is due to ____________.
Open in App
Solution
The correct option is C the loss of the ability to stop dividing on contact with other cells
Cancer is an abnormal and uncontrolled division of cells, that invade and destroy the surounding tissues.
Contact inhibition is a property of a normal cell. While dividing, when cells come in contact with nearby cells, they stop division, which inhibits uncontrolled growth. But on the other hand, cancer cells lose this property and keep on dividing. As a result of this, cancerous cells give rise to masses of cells called tumors. So option c is the correct answer.
Figure : Cells showing contact inhibition
In simple words, the benign tumor (confined to a location) does not create cancer while a malignant tumor creates deadly cancer due to metastasis. Metastasis is the spread of cancer cells to new areas of the body, often through the lymphatic system or cardiovascular system. Hence option a is not the correct answer.
The substances, radiations, or chemicals that initiate the cancer are called carcinogenic substances or carcinogens and this process is called carcinogenicity. Carcinogenic substances can be natural or synthetic. They have the ability to damage the DNA or disrupt the cells and increase the risk of cancer. There are many radioactive substances which are considered to be carcinogenic, like Gamma rays, UV rays and alpha particles. But visible spectrum (VIBGYOR) will not cause cancer. Hence option b is incorrect.
The mutant, cancer promoting forms of genes are referred to as oncogenes and its normal versions existing in DNA are referred to as proto oncogenes. The proto oncogene acts as a positive growth regulator, and is involved in promoting the differentiation and proliferation of normal cells. Mutations can cause hyperactivity in proto oncogene which leads to the formation of tumors. Hence option d is incorrect.
Cancer is an abnormal and uncontrolled division of cells, that invade and destroy the surounding tissues.
Contact inhibition is a property of a normal cell. While dividing, when cells come in contact with nearby cells, they stop division, which inhibits uncontrolled growth. But on the other hand, cancer cells lose this property and keep on dividing. As a result of this, cancerous cells give rise to masses of cells called tumors. So option c is the correct answer.
Figure : Cells showing contact inhibitionIn simple words, the benign tumor (confined to a location) does not create cancer while a malignant tumor creates deadly cancer due to metastasis. Metastasis is the spread of cancer cells to new areas of the body, often through the lymphatic system or cardiovascular system. Hence option a is not the correct answer.
The substances, radiations, or chemicals that initiate the cancer are called carcinogenic substances or carcinogens and this process is called carcinogenicity. Carcinogenic substances can be natural or synthetic. They have the ability to damage the DNA or disrupt the cells and increase the risk of cancer. There are many radioactive substances which are considered to be carcinogenic, like Gamma rays, UV rays and alpha particles. But visible spectrum (VIBGYOR) will not cause cancer. Hence option b is incorrect.
The mutant, cancer promoting forms of genes are referred to as oncogenes and its normal versions existing in DNA are referred to as proto oncogenes. The proto oncogene acts as a positive growth regulator, and is involved in promoting the differentiation and proliferation of normal cells. Mutations can cause hyperactivity in proto oncogene which leads to the formation of tumors. Hence option d is incorrect.
Suggest Corrections
0
Join BYJU'S Learning Program
Explore more
Join BYJU'S Learning Program
