Immunology Additional Practice Test

12th Standard Zoology — Immunology: Additional Online Practice Test

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During inflammation, the active migration of white blood cells (leucocytes) out of the blood vessels and into the surrounding damaged tissue is known as:

A.Phagocytosis B.Opsonisation C.Diapedesis D.Karyotyping

Which of the following cells are densely packed in the outer cortex of a lobule in the mammalian thymus gland?

A.Mature thymocytes B.Plasma cells C.Immature T cells D.Follicular dendritic cells

In a mammalian lymph node, the paracortex zone is located beneath the cortex and is richly populated by which of the following immune cells?

A.B lymphocytes and plasma cells B.T lymphocytes and interdigitating dendritic cells C.Macrophages and follicular dendritic cells D.Erythrocytes and blood platelets

Non-immunogenic substances that cannot elicit an immune response on their own but are capable of reacting with the products of a specific immune response are called:

A.Adjuvants B.Haptens C.Epitopes D.Paratopes

Substances that can be added to an antigen or a vaccine formulation to enhance and boost the host's overall immune response are known as:

A.Opsonins B.Adjuvants C.Haptens D.Precipitins

An antibody monomer is represented by the formula H2L2. What is the approximate molecular weight of a single immunoglobulin light (L) chain?

A.100,000 Da B.50,000 Da C.25,000 Da D.10,000 Da

In serological reactions, when a soluble antigen reacts with its specific antibody to form a visible insoluble aggregate, the reaction is termed a:

A.Agglutination reaction B.Opsonisation reaction C.Precipitin reaction D.Neutralization reaction

Who is credited with the discovery and development of vaccines against rabies, anthrax, and cholera in the year 1885?

A.Dr. Edward Jenner B.Louis Pasteur C.Calmette and Guerin D.Dr. Albert Sabin

Second-generation vaccines contain pure surface antigens of the pathogen to ensure safety and uniform quality. Which of the following is an example of a second-generation vaccine?

A.MMR vaccine B.Hepatitis B vaccine C.DPT vaccine D.DNA vaccine

Q10

Under the electron microscope, the spherical Human Immunodeficiency Virus (HIV) particle has an approximate diameter of:

A.50-70 nm B.100-120 nm C.200-220 nm D.300-320 nm

Q11

Upon entering the human body, HIV replicates its RNA genome into DNA within which of the following cell types, which subsequently acts as a "HIV factory"?

A.Helper T lymphocytes B.Macrophages C.B lymphocytes D.Plasma cells

Q12

Autoimmune diseases in humans can be organ-specific or systemic. Which of the following is classified as a non-organ-specific (systemic) autoimmune disorder?

A.Hashimoto's thyroiditis B.Graves' disease C.Rheumatoid arthritis D.Addison's disease

Q13

What is the regulatory property of normal cells that inhibits their uncontrolled growth when they make contact with neighboring cells, which is notably absent in cancer cells?

A.Metastasis B.Contact inhibition C.Somatic mutation D.Immunological surveillance

Q14

Immunological memory is established after primary antigen exposure. In which of the following sites does the secondary immune response primarily appear?

A.Spleen B.Lymph nodes C.Bone marrow D.Thymus gland

Q15

Who is historically credited with preparing the first vaccine against smallpox in the year 1796?

A.Dr. Edward Jenner B.Louis Pasteur C.Calmette and Guerin D.Dr. Jonas Salk

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About this Immunology test

This free online practice test covers Immunology from the 12th Standard Zoology (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

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