Q15 / 370 · NTA Abhyas (NEET) 2020 · Zoology · Human Health and Diseases
Which of the following is incorrect about cancer?
- AMetastasis is seen only in the case of a malignant tumor.
- BThe activation of c-onc genes leads to development of tumors.
- CThe patients are given substances called biological response modifiers such as alpha-interferons which activates their immune system and helps in destroying the tumor.
- Correct answerDNone of the above
Solution
Cells sloughed from such tumors reach distant sites through blood, and wherever they get lodged in the body, they start a new tumor there. This property called metastasis is the most feared property of malignant tumors.
Several genes called cellular oncogenes (c-onc) or proto-oncogenes are found in normal cells which, when activated under certain conditions, could lead to oncogenic transformation of the cells.
The patients are given substances called biological response modifiers such as alpha-interferon which activates their immune system and helps in destroying the tumor.
Several genes called cellular oncogenes (c-onc) or proto-oncogenes are found in normal cells which, when activated under certain conditions, could lead to oncogenic transformation of the cells.
The patients are given substances called biological response modifiers such as alpha-interferon which activates their immune system and helps in destroying the tumor.
Hence, the correct answer is option: 'D'.