Class XII · Biology practice

Human Health and Disease MCQs

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446 questions in this collection · Page 38 of 45

Question 371 of 446

📘 CLASS XII

Human Health And Disease

In India, NACO stands for National AIDS Control ____.

NACO stands for National AIDS Control Organisation.

Question 372 of 446

📘 CLASS XII

Human Health And Disease

WHO has started a number of programmes advocating ____ sex to prevent the spreading of HIV infection.

Advocating safe sex is one of the steps taken by WHO to prevent HIV spread.

Question 373 of 446

📘 CLASS XII

Human Health And Disease

In cancer cells, there is a breakdown of the regulatory mechanisms controlling cell growth and ____.

In cancer cells, there is breakdown of these regulatory mechanisms controlling cell growth and differentiation.

Question 374 of 446

📘 CLASS XII

Human Health And Disease

Cancer cells just continue to divide, having lost the property of contact inhibition, giving rise to masses of cells called ____ cells.

Malignant tumors are a mass of proliferating cells called neoplastic or tumor cells.

Question 375 of 446

📘 CLASS XII

Human Health And Disease

Non-ionizing radiations like ____ cause DNA damage leading to neoplastic transformation.

Non-ionizing radiations like UV cause DNA damage leading to neoplastic transformation.

Question 376 of 446

📘 CLASS XII

Human Health And Disease

The chemical carcinogens present in tobacco smoke have been identified as a major cause of ____ cancer.

The chemical carcinogens present in tobacco smoke have been identified as a major cause of lung cancer.

Question 377 of 446

📘 CLASS XII

Human Health And Disease

In ____, a piece of the suspected tissue cut into thin sections is stained and examined under microscope.

In biopsy, a piece of the suspected tissue is stained and examined under microscope.

Question 378 of 446

📘 CLASS XII

Human Health And Disease

Techniques of ____ can be applied to detect genes in individuals with inherited susceptibility to certain cancers.

Techniques of molecular biology can be applied to detect genes in individuals with inherited susceptibility to certain cancers.

Question 379 of 446

📘 CLASS XII

Human Health And Disease

In radiotherapy, tumor cells are irradiated lethally, taking proper care of the ____ tissues surrounding the tumor mass.

In radiotherapy, proper care is taken of the normal tissues surrounding the tumor mass.

Question 380 of 446

📘 CLASS XII

Human Health And Disease

Opioids are the drugs, which bind to specific ____ receptors present in our central nervous system.

Opioids bind to specific opioid receptors.

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