| Assertion (A): | Cancer is contagious and cells can spread from one person to other. |
| Reason (R): | Cancerous cells are highly differentiated cells. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Oncogene is another name for
| 1. | Inducer gene |
| 2. | Jumping gene |
| 3. | Structural gene |
| 4. | Cancer causing gene |
Which of the following is the characteristic of the malignant tumors?
| 1. | Remain confined to their original location |
| 2. | Cause little damage |
| 3. | Do not spread to other parts of the body |
| 4. | Rapidly invade the surrounding normal tissues |
| 1. | Cancer cells show enhanced contact inhibition, stopping division more readily than normal cells. |
| 2. | Cancer cells have lost the property of contact inhibition and continue dividing even when in contact with other cells. |
| 3. | Cancer cells develop contact inhibition only in the presence of growth factors. |
| 4. | Cancer cells show contact inhibition only with cells of the same type. |
Cells sloughed from malignant tumors reach distant sites through blood, and wherever they get lodged in the body, they start a new tumor there. This property is called:
1. Oncogenic transformation
2. Contact inhibition
3. Metastasis
4. Metaplasia
The spread of cancerous cells to distant sites is termed as:
1. Metastasis
2. Metachrosis
3. Metamorphosis
4. Metagenesis
| 1. | Apoptosis | 2. | Contact inhibition |
| 3. | Transfection | 4. | Transformation |
| 1. | CT Scan | 2. | Ultra Sound |
| 3. | MRI | 4. | PET SCAN |
| 1. | Rapid but localised cell division at the site of origin |
| 2. | Formation of benign growths enclosed within connective tissue |
| 3. | Spread of cancer cells from the primary site to distant organs |
| 4. | Replacement of normal cells through controlled differentiation |