Human Health and Disease - MCQs for NEET 2025 Abhyas NTA

1. Find the mismatched pair.

a.       Physical barriers – Mucus coating of the epithelium lining the gastrointestinal tracts.

b.      Physiological barriers – Acid in the stomach

c.        Cellular barriers – PMNL neutrophils

d.       Cytokine barriers – saliva in mouth

2. Which of the following sentences are correct?

         I.            The cells of malignant tumours divide erratically.

      II.            More than a million Indians suffer from cancer and a large number of them die from it annually.

    III.            They show a property called contact inhibition.

   IV.            Metastasis is the most feared property of malignant tumours.

 

a.       I, II and III

b.      II, III and IV

c.       I,II and IV

d.      I, III and IV

3. Column I lists the components of body defence and column II lists the corresponding descriptions. Match the two column. Choose the correct option from those given.

	Column- I		Column-II
(A)	Active natural immunity	(1)	Injection of gamma globulins
(B)	First line of defence	(2)	Complement proteins and interferons
(D)	Second line of defence	(4)	Surface barriers

 

a.       A  B  C  D

         4   3   5   2

 b.      A  B  C  D

         3   4   2   5

 c.       A  B  C  D

         3   4   5   2

 d.      A  B  C  D

         5   3   2   1

4. Which of the following statement/s is/are correct about crack?

a.       It interferes with transport of neurotransmitter dopamine.

b.      It produces a sense of euphoria.

c.       Excessive dosage causes hallucinations.

d.      All of these

 

5. Which of the following statements regarding different barriers of innate immunity is not correct?

a.       Acid present in the stomach, saliva in the mouth, tears from the eyes preven t the growth of microorganisms and constitute physiological barriers of  our body

b.      Mucous membrane lining the respiratory, gastrointestinal and urinogenital tracts helps in trapping the microbes and constitute physiological barriers of our body

c.       Certain types of leucocytes such as polymorpho-nuclear leucocytes (PMNL- neutrophils) and lymphocytes such as natural killer cells, constitute cellular barriers of our body

d.      Virus-infected cells secrete proteins called interferons which protect non- infected cells from further viral infection and constitute cytokine barriers of our body

6. Antigenic determinants sited bind to which protion of an antibody molecule?

a.       Light chains

b.      Heavy Chains

c.       Intermediate chains

d.      Both light chains and heavy chains

7. Which of the following groups of viruses are known to infect the nose and respiratory passage in humans?

a.       Retroviruses

b.      Echoviruses

c.       Rhinoviruses

d.      Oncogenic viruses

8. The genetic material of HIV is

a.       dsDNA

b.      dsRNA

c.       ssDNA

d.      ssRNA

 

9. Vector for dengue and chikungunya is

a.       Female Anopheles mosquito

b.      Male Anopheles mosquito

c.       Culex mosquito

d.      Aedes mosquito

 

10. Plasmodium vivax causes:-

a.       Benign tertian malaria

b.      Malignant fever

c.       Quartan fever

d.       Normal malaria

11. Which of the following is a matching pair of the vector and the disease?

a.       Culex-Filariasis

b.      Housefly – Yellow fever

c.       Body louse- Typhoid

d.      Sandfly – Plague

 

12. Disease caused by the biting of Culex mosquito is

a.       Filariasis

b.      Dengue fever

c.       Yellow fever

d.      Pneumonia

 

13. The msot common cancer in men in India is

a.       Lung cancer

b.      Throat cancer

c.       Mouth- throat cancer

d.       None of these

14. Cell division or mitosis is a normal process in a living cell, but sudden and abnormal mitosis in an organ will frequently result in a

a.       Zygote

b.      Gastrula

c.        New organ

d.      Cancer

 

15. ‘Bhang’ and ‘Ganja’ are:

a.       Extract of hemp plant-cannabis sativa

b.      Ripe poppy fruits and leaves

c.       Dried leaves, flowers and buds of Cannabis indica plant

d.      None of the above

16. The figure is given below shows the mode of action of AIDS virus. Identify steps

A, B, C, D and E   labelled in it.

a.       A- New viral DNA introduced into cell, B- viral RNA produced, C- viral DNA incorporated into host genome. D- New viral DMA. E- New viruses produced

b.      A- Viral DNA incorporated into host genome, B- Viral DNA, C- New viral RNA introduced, D – Viral RNA produced, E- New viruses produced

c.       A- viral RNA introduced, B- viral DNA, C- viral DNA incorporated into host genome, D- New viral RNA produced, E- New viruses produced

d.      A- Viral DNA introduced, B- Viral RNA, C – Viral RNA incorporated into host genome, D- New viral DNA produced, E- New viruses produced

 

17. The first line of defence in the immune system is provided by

a.       skin  and mucous membrane

b.      inflammatory response

c.       the complement system

d.      none of these

 

18. The tendency of the body to0 manifest a characteristic and unpleasant withdrawal syndrome if a regular dose of drugs/alcohol is abruptly discontinued is called as

a.       Habituation

b.      Dependence

c.       Psychotherapy

d.      Tolerance

 

19. The rejection of organ transplanting in human is prevented by using

a.       Aspirin

b.      Cyclosporin

c.       Calcitonin

d.      Thrombin

20. Type of antibody that remains attached to mucus membranes of body is :-

a.       IgA

b.      IgM

c.       IgD

d.      IgG

 

21. An antibody consists of

a.       two light peptide chains and two heavy peptide chains

b.      two light peptide chains and one heavy peptide chain

c.       one light peptide chain and one heavy peptide chain

d.      one light peptide chain and two heavy peptide chains

 

22. Identify the wrong statement.

a.       Cocaine is obtained from coca plant Erythroxylum coca.

b.      Cocaine is a potent depressant for CNS.

c.       Excessive dosage of cocaine causes hallucinations.

d.      It interferes with the transport of neurotransmitter dopamine

23. The common cold is caused by

a.       Rhino viruses

b.      Streptococcus pneumoniae

c.       Salmonella thphimurium

d.      Plasmodium vivax

24. An intestinal parasite which causes blockage of the intestinal passage and whose eggs are exreted along with the faeces of  infected person is

a.       Wuchereria bancrofti

b.      Ascaris

c.        Epidermophyton

d.      Microsporum

25. Which of the following pairs correctly matched a disease and a pathogen causing it?

a.        

Disease	Causative organism
Typhoid	Salmonella typhi

 

b.       

Disease	Causative organism
Pneumonia	Haemophilus pneumoniae

c.        

Disease	Causative organism
Malaria	Ascaris lumbricoides

d.       

Disease	Causative organism
Ringworm	Entamoeba histolytica

 

26. The pathogen Microsporum responsible for ringworm disease in humans belongs to the same kingdom as that of 

a. Taenia, a tapeworm

b. Ascaris, a roundworm

c. Rhizopus, a mould

d. Wuchereria, a filarial worm

 

27. The abbreviation AIDS stands for

a. Acquired immuno disease syndrome

b. Acquired immuno deficiency syndrome

c. Acquired immunity determining syndrome

d. Acquired immunity delay syndrome

 

28. Identify A, B, C, D and E in the given diagram of HIV virus

 

a. A- RNA, B- Reverse transcriptase, C- Capsule protein coat, D- Lipid membrane, E- Envelope protein coat

b. A- RNA, B- Reverse transcriptase, C- Lipid membrane, D- Envelope protein coat, E- Capsule protein coat

c. A- Reverse transcriptase, B- Lipid membrane, C- RNA, D- Capsule protein coat, E- Envelope protein coat

d. A- RNA, B- Reverse transcriptase, C- Envelope protein coat, D- Lipid membrane, E- Capsule protein coat

 

 

29. Which of the following approaches are used for the treatment of cancer?

a.  Immunotherapy

b.  Surgery

c.  Radiotherapy and chemotherapy

d.  All of these

30. In humans, receptors for opioids are present in:

a.  Central nervous system

b.  Gastrintestinal tract

c. Respiratory Tract

d. Both (A) and (B)

 

ANSWER KEY

1.  D	2. C	3. C	4. D	5. B
6.D	7.  C	8. D	9.  D	10.  A
11. A	12.  A	13.  C	14.  D	15.  A
16.  C	17.  A	18.  B	19. B	20.  A
21.  A	22.  B	23.  A	24.  B	25.  A
26.   C	27.  B	28.  A	29.  D	30.  D