Multiple Choice Questions (MCQs) for NEET Biology: Human Health and Disease
Explore reliable objective questions for Human Health and Disease tailored for NEET learners. Utilizing these Biology multiple-choice formats ensures thorough preparation and strengthens problem-solving speed for upcoming school assessments.
Practice Human Health and Disease MCQs for NEET Biology
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Multiple Choice Questions
(a) erythrocytes
(b) lymphocytes
(c) eosinophils
(d) thrombocytes
Show Answer & Explanation
Answer: (b) lymphocytes
Explanation:
1. Lymphocytes (B and T cells) are the cells involved in the immune mechanism.
Teacher's Note:
1. Erythrocytes carry oxygen and thrombocytes help in clotting.
2. B cells make antibodies and T cells give cell-mediated immunity.
(a) bhang
(b) charas
(c) heroin
(d) nicotine
Show Answer & Explanation
Answer: (c) heroin
Explanation:
1. Heroin (smack), made from morphine, is an opiate narcotic. Bhang and charas come from Cannabis, and nicotine is a stimulant.
Teacher's Note:
1. Opiates come from the poppy plant.
2. Heroin is a diacetylmorphine.
(a) Dengue fever — Arbovirus
(b) Plague — Yersinia pestis
(c) Syphilis — Trichuris trichiura
(d) Malaria — Plasmodium vivax
Show Answer & Explanation
Answer: (c) Syphilis — Trichuris trichiura
Explanation:
1. Syphilis is caused by the bacterium Treponema pallidum, not by the roundworm Trichuris trichiura.
Teacher's Note:
1. Dengue is caused by an arbovirus.
2. Match each disease with its pathogen.
(a) Goitre
(b) Skin cancer
(c) Hay fever
(d) Enteric fever
Show Answer & Explanation
Answer: (c) Hay fever
Explanation:
1. Hay fever is an allergic reaction to pollen.
Teacher's Note:
1. Goitre is a deficiency disease and enteric fever is bacterial.
2. Allergies involve IgE and histamine.
(a) aberrant functioning of the immune mechanism
(b) increase in ambient temperature
(c) age of the individual
(d) food habits
Show Answer & Explanation
Answer: (a) aberrant functioning of the immune mechanism
Explanation:
1. Hypersensitivity (allergy) results from aberrant, exaggerated functioning of the immune mechanism towards a harmless antigen.
Teacher's Note:
1. Mast cells release histamine.
2. Allergy is an immune over-reaction.
(a) Edward Jenner
(b) Emil von Behring
(c) Robert Koch
(d) Louis Pasteur
Show Answer & Explanation
Answer: (b) Emil von Behring
Explanation:
1. Emil von Behring discovered passive immunity by using antiserum against diphtheria and tetanus.
Teacher's Note:
1. Jenner developed the smallpox vaccine.
2. Preformed antibodies give passive immunity.
(a) poisons released by living bacterial cells into the host tissue
(b) poisons released from dead bacterial cells into the host tissue
(c) poisons released by virus into the host tissues
(d) excessive immune response by the host’s body
Show Answer & Explanation
Answer: (a) poisons released by living bacterial cells into the host tissue
Explanation:
1. In diphtheria the bacterium Corynebacterium diphtheriae releases an exotoxin from living cells.
Teacher's Note:
1. The toxin damages the throat.
2. Exotoxins come from living bacteria.
(a) Barbiturates
(b) Morphine
(c) Amphetamines
(d) LSD MAN HEALTH AND DISEASES
Show Answer & Explanation
Answer: (b) Morphine
Explanation:
1. Morphine is an opiate narcotic obtained from the opium poppy. Barbiturates are depressants, amphetamines are stimulants and LSD is a hallucinogen.
Teacher's Note:
1. It is a strong pain killer.
2. Morphine comes from Papaver somniferum.
(a) typhoid
(b) measles
(c) tetanus
(d) malaria
Show Answer & Explanation
Answer: (b) measles
Explanation:
1. Interferons are produced in viral infections. Measles is a viral disease. Typhoid, tetanus and malaria are caused by bacteria and protozoa.
Teacher's Note:
1. Interferons protect other cells.
2. Interferon means a virus infection.
(a) spleen
(b) intestine
(c) lymph glands
(d) neuromuscular junction
Show Answer & Explanation
Answer: (d) neuromuscular junction
Explanation:
1. The toxin of Clostridium botulinum blocks acetylcholine release at the neuromuscular junction and causes paralysis.
Teacher's Note:
1. It is found in spoiled canned food.
2. Botulism affects nerve-muscle contact.
(a) Giardia
(b) Salmonella
(c) Shigella
(d) Escherichia
Show Answer & Explanation
Answer: (b) Salmonella
Explanation:
1. Typhoid fever is caused by the bacterium Salmonella typhi.
Teacher's Note:
1. Shigella causes bacillary dysentery.
2. Typhoid is by Salmonella.
(a) cholera
(b) leprosy
(c) TB
(d) diphtheria
Show Answer & Explanation
Answer: (b) leprosy
Explanation:
1. Koch's postulates need the pathogen to be grown in pure culture. Leprosy bacteria cannot be cultured on artificial media, so the postulates are not applicable.
Teacher's Note:
1. It is caused by Mycobacterium leprae.
2. Not all pathogens can be cultured.
(a) human insulin
(b) powerful antibiotic
(c) isoenzyme
(d) hydrolytic enzyme
Show Answer & Explanation
Answer: (a) human insulin
Explanation:
1. Humulin is human insulin made by recombinant DNA technology (by Eli Lilly).
Teacher's Note:
1. It is made in E. coli.
2. Hu means human, ulin means insulin.
(a) product of spore formation in bacteria
(b) hybrid cells resulting from myeloma cells
(c) nervous cells of frog
(d) only cells having oncogenes
Show Answer & Explanation
Answer: (b) hybrid cells resulting from myeloma cells
Explanation:
1. Hybridoma cells are hybrid cells formed by fusing a B lymphocyte with a myeloma (cancer) cell, and they produce monoclonal antibodies.
Teacher's Note:
1. They divide continuously.
2. Hybridoma means hybrid plus myeloma.
(a) AIDS — Bacillus anthracis
(b) Syphilis — Treponema pallidum
(c) Urethritis — Entamoeba gingivalis
(d) Gonorrhoea — Leishmania donovani
Show Answer & Explanation
Answer: (b) Syphilis — Treponema pallidum
Explanation:
1. Syphilis is a sexually transmitted disease caused by the bacterium Treponema pallidum.
Teacher's Note:
1. AIDS is caused by HIV and gonorrhoea by Neisseria gonorrhoeae.
2. Match STDs with pathogens.
(a) immunoglobulins
(b) interferons
(c) antitoxins
(d) lipoproteins
Show Answer & Explanation
Answer: (b) interferons
Explanation:
1. Interferons are small proteins made by vertebrate cells in response to viral infection, and they inhibit virus multiplication.
Teacher's Note:
1. Immunoglobulins are antibodies.
2. Interferon interferes with viruses.
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NEET Biology Human Health and Disease Objective Test Questions
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NCERT-Aligned Objective Questions and Solutions
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FAQs
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