Class 12 Human Health and Disease MCQs with answers

Class 12 Chemistry Human Health and Disease MCQs with answers

Class 12 Chemistry MCQs on “Human Health and Disease” offer students a comprehensive preparation platform on this critical topic. These multiple-choice questions cover various aspects of human health and diseases, including the biochemistry of diseases, immunology, microbial infections, and metabolic disorders. By engaging with these MCQs, students can deepen their understanding of the biochemical processes underlying health and disease states.

Our MCQs challenge students to apply their knowledge to solve problems and analyze disease scenarios, fostering critical thinking and analytical skills essential for success in Class 12 Chemistry exams. Each MCQ is accompanied by a detailed answer explanation, enabling students to grasp the underlying concepts thoroughly.

By practicing Class 12 Chemistry MCQs on “Human Health and Disease” at Horizon Competition School, students not only prepare effectively for their exams but also gain a deeper appreciation for the complexities of human health and the biochemical basis of diseases.

Q1. Haemozoin is:

1. A precursor of hemoglobin.
2. A toxin from Streptococcus.
3. A toxin from Plasmodium species.
4. A toxin from Haemophilus species.

Q2. The organisms which cause diseases in plants and animals are called:

1. Pathogens.
2. Vectors.
3. Insects.
4. Worms.

Q3. Tobacco consumption is known to stimulate secretion of adrenaline and nor-adrenaline. The 1 Mark
component causing this could be:

1. Nicotine.
2. Tannic acid.
3. Curaimin.
4. Catechin.

Q4. When an apparently healthy person is diagnosed as unhealthy by a psychiatrist, the reason could
be that:

1. The patient was not efficient at his work.
2. The patient was not economically prosperous.
3. The patient shows behavioural and social maladjustment.
4. He does not take interest in sports.

Q5. Which one of the following is primary lymphoid organ?

1. Lymph nodels.
2. Thymus.
3. Tonsils.
4. Spleen.

Q6. The following are the steps involved in the life cycle of the malarial parasite.

1. Mosquito bites and injects sporozoites.
2. Mosquitoes take up gametocyctes during blood sucking.
3. Sporozoites reach liver through blood, divide and go to blood.
4. Sporozoites migrate to the salivary gland of mosquito.
5. Parasites reproduce in RBCs, burst and infect new cells.
   Arrange the above events in the order of their occurrence.
6. A → E → B → D → A
7. A → B → C → D → E
8. C → B → E → D → A
9. C → B → D → E → A

Q7. Use of anti-histamines and steroids gives a quick relief from:

1. Allergy
2. Nausea
3. Cough
4. Fever

Q8. In malignant tumors, the cells proliferate, grow rapidly and move to other parts of the body to
form new tumors. This stage of disease is called:

1. Metagenesis.
2. Metastasis.
3. Teratogenesis.
4. Mitosis

Q9. Which of the following glands is large sized at birth but reducies in size with aging?

1. Pineal.
2. Pituitary.
3. Thymus.
4. Thyroid.

Q10. The genes causing cancer are:

1. Structural genes.
2. Sxpressor genes.
3. Oncogenes.
4. Regulatory genes.

Q11. Antibodies present in colostrum which protect the new born from certain diseases is of:

1. Ig G type.
2. Ig A type.
3. Ig D type.
4. Ig E type

Q12. Typhoid fever could be confirmed by:

1. Widal test.
2. ELISA.
3. Western blot.
4. ECG.

Q13. Diacetyl morphine is commonly known as

1. Cocaine
2. Hashish
3. Ganja
4. Heroin

Q14. Which of the following is not a lymphoid tissue?

1. Spleen.
2. Tonsils.
3. Appendix.
4. Thymus.

Q15. One of the following is not the causal organism for ringworm:

1. Microsporum.
2. Trichophyton.
3. Epidermophyton.
4. Macrosporum.