Class XII · Biology practice

Human Health and Disease MCQs

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446 questions in this collection · Page 37 of 45

Question 361 of 446

📘 CLASS XII

Human Health And Disease

A preparation of antigenic proteins of a pathogen or inactivated/weakened pathogen introduced into the body is called a ____.

In vaccination, a preparation of antigenic proteins of pathogen or inactivated/weakened pathogen (vaccine) are introduced.

Question 362 of 446

📘 CLASS XII

Human Health And Disease

The antibodies produced in response to allergens are of the ____ type.

The antibodies produced to allergens are of IgE type.

Question 363 of 446

📘 CLASS XII

Human Health And Disease

Allergies are due to the release of chemicals like histamine and serotonin from the ____ cells.

Allergy is due to the release of chemicals like histamine and serotonin from the mast cells.

Question 364 of 446

📘 CLASS XII

Human Health And Disease

The phenomenon where the body attacks self-cells due to genetic or unknown reasons is called ____ disease.

The body attacks self-cells, resulting in damage, which is called auto-immune disease.

Question 365 of 446

📘 CLASS XII

Human Health And Disease

The bone marrow and thymus provide micro-environments for the development and maturation of ____-lymphocytes.

Both bone-marrow and thymus provide micro-environments for the development and maturation of T-lymphocytes.

Question 366 of 446

📘 CLASS XII

Human Health And Disease

Secondary lymphoid organs like the spleen, lymph nodes, and tonsils provide the sites for interaction of lymphocytes with the ____.

The secondary lymphoid organs provide the sites for interaction of lymphocytes with the antigen.

Question 367 of 446

📘 CLASS XII

Human Health And Disease

AIDS was first reported in the year ____.

AIDS was first reported in 1981.

Question 368 of 446

📘 CLASS XII

Human Health And Disease

HIV is transmitted from an infected mother to her child through the ____.

HIV is transmitted from infected mother to her child through placenta.

Question 369 of 446

📘 CLASS XII

Human Health And Disease

Individuals who have ____ sexual partners are considered at high risk of getting HIV infection.

Individuals who have multiple sexual partners are at high risk of getting HIV infection.

Question 370 of 446

📘 CLASS XII

Human Health And Disease

HIV enters into ____ where its RNA genome replicates to form viral DNA.

The virus enters into macrophages where RNA genome replicates to form viral DNA.

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