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प्रश्न
What is cancer?
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उत्तर
Cancer is the uncontrolled growth of abnormal cells in the body. Cancer develops when the body’s normal control mechanism stops working. Old cells do not die and instead grow out of control, forming new, abnormal cells. These extra cells may form a mass of tissue, called a tumor. Some cancers, such as leukemia, do not form tumors.
संबंधित प्रश्न
Name the main five types of cancer.
Inactive gene that can cause cancer is called ______.
What is ‘Leukemia’?
Enlist any four therapies used to treat a cancer patient.
Carcinogens are cancer causing agents.
What is metastasis?
How is a cancer cell different from a normal cell?
The cancer that generally affects lymph nodes and spleen is ______.
All of the following are cancer-causing, EXCEPT ______.
One of the following is INCORRECT about cancer cells.
The immune system of a person is suppressed. In the ELISA test, he was found positive to a pathogen.
- Name the disease the patient is suffering from.
- What is the causative organism?
- Which cells of body are affected by the pathogen?
If a patient is advised Anti Retroviral Therapy, which infection is he suffering from? Name the causative organism.
In the given flow diagram, the replication of retrovirus in a host is shown. Observe and answer the following questions.
Fill in (1) and (2)
Why is the virus called retrovirus?
Can the infected cell survive while viruses are being replicated and released?
Give the full form of CT and MRI. How are they different from each other? Where are they used?
What are the methods of cancer detection? Describe the common approaches for treatment of cancer.
Why is a malignant tumour considered to be more damaging than a benign tumour? Explain.
Name any two techniques used to detect the cancer of internal organs and write about any one of them.
Immunotherapy these days is one of the most efficient ways of treatment of cancer. The therapy involved activates the immune system and destroys the tumour.
- Write an example of one such biological response modifier used in immunotherapy.
- Why do patients need such substances if immune system is already working in body?
- State what is 'Contact inhibition'.
