Free Human Body and Health MCQs with Answers
588 Human Body and Health MCQs from Everyday Science, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
The human body is studied through its organ systems, including digestion, respiration, circulation, excretion, nervous coordination, reproduction and immunity. Coverage also includes nutrients and deficiency diseases, hormones, blood groups, common infections, vaccines, sanitation and basic first aid, while distinguishing communicable diseases from inherited and lifestyle disorders.
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- A. Rickets
- B. Scurvy
- C. Beriberi
- D. Night blindness
Explanation: Vitamin C (ascorbic acid) is required for collagen synthesis; its deficiency causes scurvy, marked by bleeding gums and poor wound…
Correct answer: Scurvy- A. 35 °C
- B. 37 °C
- C. 39 °C
- D. 41 °C
Explanation: Normal human body temperature is approximately 37 °C, which equals 98.6 °F.
Correct answer: 37 °C- A. AB positive
- B. A negative
- C. O negative
- D. B positive
Explanation: O negative red cells carry neither A nor B antigens nor the Rh D antigen, so they can be transfused to a recipient of any blood group in…
Correct answer: O negative- A. Vitamin A
- B. Vitamin C
- C. Vitamin D
- D. Vitamin K
Explanation: Ultraviolet B radiation acts on a cholesterol-related compound in the skin to begin vitamin D production.
Correct answer: Vitamin D- A. Study of viruses
- B. Study of fungi
- C. Structure, genetics, and ecology of bacteria
- D. Study of parasites
Explanation: Bacteriology examines bacteria, including their structure, genetics, physiology, and ecological relationships.
Correct answer: Structure, genetics, and ecology of bacteria- A. Virology
- B. Mycology
- C. Bacteriology
- D. Parasitology
Explanation: The study of bacteria is called bacteriology. Virology studies viruses, mycology studies fungi, and parasitology studies parasites.
Correct answer: Bacteriology- A. Aeverology
- B. Ornithology
- C. Ornithophily
- D. Polligramy
Explanation: Ornithophily is pollination carried out by birds, from ornithos meaning bird and phily meaning attraction or affinity.
Correct answer: Ornithophily- A. Human Metapneumo virus
- B. Human Mycoplasma Virus
- C. Human Multipathogen Virus
- D. Human Molecular Virus
Explanation: HMPV expands to human metapneumovirus, a respiratory virus that can cause cold-like illness and more serious infections.
Correct answer: Human Metapneumo virus- A. Human Behavior
- B. Primates
- C. Animals and Plants
- D. Forests
Explanation: Primatology is the branch of zoology concerned with primates, including lemurs, monkeys, apes and humans.
Correct answer: Primates- A. Organic particles in the air
- B. Ancient Life and Fossils
- C. How bodily structures are put together in an organism
- D. How living things interact with each other and their environment
Explanation: Paleontology studies ancient life mainly through fossils and other preserved remains or traces.
Correct answer: Ancient Life and Fossils- A. Genus & Family
- B. Family & Order
- C. Genus & Class
- D. Genus & Species
Explanation: In Homo sapiens, Homo is the genus and sapiens is the species. A scientific name normally combines these two ranks, whereas family, order…
Correct answer: Genus & Species- A. Plasmid
- B. Capsule
- C. Plastid
- D. Capsid
Explanation: A virus’s protein covering is called a capsid, which protects its genetic material and helps determine its shape.
Correct answer: Capsid- A. Biceps
- B. Cardiac
- C. Stomach
- D. Vessels
Explanation: The biceps is a skeletal muscle that can be consciously contracted, making it voluntary.
Correct answer: Biceps- A. Protozoans
- B. Algae
- C. Fungi
- D. Virus
Explanation: Most forms of infectious hepatitis are caused by hepatitis viruses, such as hepatitis A, B, C, D and E viruses.
Correct answer: Virus- A. Physiological
- B. Psychological
- C. Dermatological
- D. Genital
Explanation: Dermatophagia is compulsive biting or chewing of the skin, commonly classified as a body-focused repetitive behaviour with a psychological…
Correct answer: Psychological- A. Subclavian artery
- B. Aorta
- C. Brachial artery
- D. None of these
Explanation: The aorta is the body’s largest artery, carrying oxygenated blood from the left ventricle to the systemic circulation.
Correct answer: Aorta- A. Vitamin A
- B. Vitamin K
- C. Vitamin C
- D. Vitamin D
Explanation: Vitamin C deficiency causes scurvy, historically called sailors’ disease because sailors on long voyages often lacked fresh fruits and…
Correct answer: Vitamin C- A. smaller number of Red Blood Cells
- B. larger number of Red Blood Cells
- C. smaller number of White Blood Cells
- D. larger number of White Blood Cells
Explanation: At high altitude, lower oxygen pressure stimulates the kidneys to release erythropoietin, increasing red blood cell production.
Correct answer: larger number of Red Blood Cells- A. 20 dB
- B. 60 dB
- C. 100 dB
- D. 160 dB
Explanation: Sound around 100 dB can cause pain and possible hearing damage, especially with prolonged exposure, although the exact risk depends on…
Correct answer: 100 dB- A. Chromosomes
- B. Gene
- C. Nucleotides
- D. none
Explanation: A gene is the basic unit of heredity, consisting of DNA that carries information for a trait or functional product.
Correct answer: GeneHuman Body and Health MCQs: common questions
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There are 588 Human Body and Health MCQs in the Everyday Science bank, shown 20 to a page with the correct answer and an explanation on each.
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Yes. Each Human Body and Health question shows the correct option and a written explanation of why it is correct, so a wrong answer teaches you something rather than just being marked wrong.
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