Question
How cancer is detected and diagnosed?

Answer

Cancer detection is based on biopsy and histopathological studies of the tissue, blood and bone marrow tests for increased cell counts in the case of leukemians (blood cancers). Techniques like radiography (use of X-rays), CT (Computed Tomography) and MRI (Magnetic Resonance Imaging) are useful to detect cancers of internal organs. Antibodies against cancer-specific antigens are also used for detection of certain cancers.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A person has been diagnosed to be $HIV^+$​​​​​​​.
  1. Name the disease and the test which the person has to undergo.
  2. Write the full name of the pathogen involved and describe its structure.
  3. Which particular cells of this person are likely to get destroyed?
OR
The immune system of a person is suppressed. In the ELISA test, he was found positive to a pathogen.
  1. Name the disease the patient is suffering from.
  2. What is the causative organism?
  3. Which cells of the body are affected by the pathogen?
Explain the following terms: (a) Gene mutation (b) Genetic recombination (c) Gene flow
Prior to a sports event blood & urine samples of sportspersons are collected for drug tests.
  1. Why is there a need to conduct such tests?
  2. Name the drugs the authorities usually look for.
  3. Write the generic names of two plants from which these drugs are obtained.
Give Reasons: Only 20 amino acids are considered as standard.
How will you classify man as carnivore (primary/ secondary) or omnivore? Why?
Given reasons : Food chains do not exist in isolation, but are always interconnected to form food web.
Describe the discontinuous synthesis of DNA.
  1. What are transgenic animals?
  2. Name the transgenic animal having the largest number amongst all the existing transgenic animals.
  3. Mention any three purposes for which these animals are produced.
What is aneuploidy? Differentiate between trisomic and triploid condition? Name any one trisomic condition found in human.
Cleistogamy can favour only autogamy. Justify