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Human Health and Disease MCQs

Class XII Biology NCERT Based NEET Practice

📘 Concept Based 📝 Exam Level 🤖 AI Explanations
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446 questions in this chapter
Question 81 of 446
📘 CLASS XII
The gene identified in normal cells that, when activated, could lead to oncogenic transformation is called:
Several genes called cellular oncogenes (c-onc) or proto oncogenes have been identified in normal cells which, when activated, could lead to transformation.
Question 82 of 446
📘 CLASS XII
Cancer detection based on examining stained, thin sections of suspected tissue under a microscope is known as:
Cancer detection is based on biopsy and histopathological studies of the tissue.
Question 83 of 446
📘 CLASS XII
Which diagnostic technique uses X-rays to generate a three-dimensional image of the internals of an object?
Computed tomography uses X-rays to generate a three-dimensional image of the internals of an object.
Question 84 of 446
📘 CLASS XII
Which technique uses strong magnetic fields and non-ionising radiations to accurately detect pathological changes in living tissue?
MRI uses strong magnetic fields and non-ionising radiations to accurately detect pathological and physiological changes.
Question 85 of 446
📘 CLASS XII
In radiotherapy for cancer treatment, tumor cells are irradiated lethally while taking proper care of:
In radiotherapy, tumor cells are irradiated lethally, taking proper care of the normal tissues surrounding the tumor mass.
Question 86 of 446
📘 CLASS XII
Which substance is given to cancer patients as a biological response modifier to activate their immune system against the tumor?
Patients are given biological response modifiers such as α-interferon which activates their immune system and helps in destroying the tumor.
Question 87 of 446
📘 CLASS XII
The drugs commonly abused are classified into Opioids, Cannabinoids, and:
The drugs, which are commonly abused are opioids, cannabinoids and coca alkaloids.
Question 88 of 446
📘 CLASS XII
Opioids bind to specific receptors present in the central nervous system and the:
Opioids bind to specific opioid receptors present in our central nervous system and gastrointestinal tract.
Question 89 of 446
📘 CLASS XII
Heroin, commonly called smack, is chemically known as:
Heroin, commonly called smack is chemically diacetylmorphine.
Question 90 of 446
📘 CLASS XII
Heroin is extracted from the latex of which plant?
Heroin is obtained by acetylation of morphine, which is extracted from the latex of poppy plant Papaver somniferum.