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Class XII · Biology

Human Health and Disease: NEET MCQ practice

500 practice questions on Human Health and Disease, including 63 from past NEET papers, each with an explanation. Practise them chapter by chapter in the GyaanLoop app.

500

Practice questions

340

Easy

160

Medium

0

Hard

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What Human Health and Disease covers

Topics in the NEET (UG) 2026–27 syllabus for this chapter.

  • Pathogens and parasites causing human diseases (malaria, filariasis, ascariasis, typhoid, pneumonia, common cold, amoebiasis, ringworm)
  • Basic concepts of immunology- vaccines
  • Cancer, HIV and AIDS
  • Adolescence, drug and alcohol abuse

Past NEET questions on Human Health and Disease

Try each one, then open the answer and explanation.

Question 1 · NEET 2025

Which are correct: A. Computed tomography and magnetic resonance imaging detect cancers of internal organs. B. Chemotherapeutics drugs are used to kill non- cancerous cells. C. -interferon activate the cancer patients’ immune system and helps in destroying the tumour. D. Chemotherapeutic drugs are biological response modifiers. E. In the case of leukaemia blood cells counts are decreased. Choose the correct answer from the option given below:

  1. A.B and D only
  2. B.D and E only
  3. C.C and D only
  4. D.A and C only
Show answer

Answer: D. A and C only

CT and MRI detect internal cancers (A true). Chemotherapeutics kill cancer cells, not normals (B false). α-interferon activates immune system against tumors (C true). Chemotherapeutic drugs are cytotoxic, not immune modifiers (D false). Leukemia increases white cell counts (E false). Only A and C true.

Question 2 · NEET 2025

Neoplastic characteristics of cells refers to: A. A mass of proliferating cell B. Rapid growth of cells C. Invasion and damage to the surrounding tissue D. Those confined to original location Choose the correct answer from the options given below:

  1. A.A, B only
  2. B.A, B, C only
  3. C.A, B, D only
  4. D.B, C, D only
Show answer

Answer: B. A, B, C only

Neoplasia means uncontrolled proliferation forming a mass (A), grows rapidly (B), can invade and damage nearby tissue (C). 'Confined to original location' (D) describes benign tumors, not all neoplasms. So correct: A, B, C only.

Question 3 · NEET 2025

After maturation, in primary lymphoid organs, the lymphocytes migrate for interaction with antigens to secondary lymphoid organ(s)/tissue(s) like: A. thymus B. bone marrow C. spleen D. lymph nodes E. Peyer's patches Choose the correct answer from the options given below:

  1. A.B, C, D only
  2. B.A, B, C only
  3. C.E, A, B only
  4. D.C, D, E only
Show answer

Answer: D. C, D, E only

Secondary lymphoid organs are where lymphocytes interact with antigens; primary ones are where they mature. Thymus (A) and bone marrow (B) are primary. Spleen (C), lymph nodes (D), and Peyer's patches (E) are secondary.

Question 4 · NEET 2025

Identify the statement that is NOT correct.

  1. A.Each antibody has two light and two heavy chains.
  2. B.The heavy and light chains are held together by disulfide bonds.
  3. C.Antigen binding site is located at C-terminal region of antibody molecules.
  4. D.Constant region of heavy and light chains are located at C-terminus of antibody molecules.
Show answer

Answer: C. Antigen binding site is located at C-terminal region of antibody molecules.

Antigen-binding sites are formed by the variable regions at the N-terminal ends of light and heavy chains, not the C-terminal region. The C-terminal region is constant.

Question 5 · NEET 2025

Which of the following type of immunity is present at the time of birth and is a non-specific type of defence in the human body?

  1. A.Acquired Immunity
  2. B.Innate Immunity
  3. C.Cell-mediated Immunity
  4. D.Humoral Immunity
Show answer

Answer: B. Innate Immunity

Immunity present at birth and non-specific is innate immunity.

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