Read the following paragraph and answer the given questions.
Cancer detection is based on biopsy and histopathological studies. Techniques like radiography (use of X-rays), CT (computed tomography) and MRI (magnetic resonance imaging) are very useful to detect cancers of the internal organs. Do you know why mother's milk is considered very essential for the new-born infant? The yellowish fluid colostrum secreted by mother during the initial days of lactation has abundant antibodies (IgA) to protect the infant. Different species of Plasmodium (P. vivax, P. malaria and P. falciparum) are responsible for different types of malaria. Of these, malignant malaria caused by Plasmodium falciparum is the most serious one and can even be fatal. The exaggerated response of the immune system to certain antigens present in the environment is called allergy. The use of drugs like anti-histamine, adrenalin and steroids quickly reduce the symptoms of allergy. Drugs like barbiturates, amphetamines, benzodiazepines, and other similar drugs, that are normally used as medicines to help patients cope with mental illnesses like depression and insomnia, are often abused. Morphine is a very effective sedative and painkiller, and is very useful in patients who have undergone surgery.
Which one of the following is not used for detection of cancer?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → Biological response modifiers as an interferon
Cancer is detected by biopsy and histopathology, and cancers of internal organs by imaging such as radiography, CT and MRI.
Option (1) Computed tomography — Used for detection. CT uses X-rays to build a 3-D image of the internal organs.
Option (2) Biological response modifiers as an interferon — Not used for detection. Interferons are given in treatment: they activate the immune system and help destroy the tumour.
Option (3) Magnetic resonance imaging — Used for detection. MRI uses strong magnetic fields and non-ionising radiation to detect changes in living tissue.
Option (4) Biopsy — Used for detection. A thin section of the suspected tissue is stained and examined under a microscope.
Note: The passage is taken from NCERT. NTA has put lines of the NCERT text together to make it. Most CUET (UG) questions come straight from NCERT, so study the book line by line, including figures and their titles.
NCERT Extract:
Cancer – …
