Biology
Human Physiology and Anatomy
2,062 Questions
Human physiology and anatomy explore the structural organization and biological functions of the human body and its systems. Questions focus on the primary roles of organs, hormones, cellular components, and developmental processes. These fundamentals are integral to medical entrance tests and general science sections.
Organ functionsHormone functionsImmune system rolesDigestive systemCellular functions
Human Physiology and Anatomy Questions
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It provides a physical barrier.
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It provides a chemical barrier.
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It provides colour to the skin.
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It provides a barrier for trans-epidermal water loss.
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It plays a primordial role in thermoregulation.
E
Correct answer
Explanation
It plays a primordial role in thermoregulation and in healing.
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excretion
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respiration
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digestion
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Both (1) and (2)
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osmoregulation
B
Correct answer
Explanation
The most prominent roles of mitochondria are to produce the energy currency of the cell, ATP (i.e. phosphorylation of ADP), through respiration and to regulate cellular metabolism.
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Body making compounds
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Metabolic regulators
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Energy providing compounds
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Producer of genetic material
B
Correct answer
Explanation
Vitamins regulate various metabolic pathways.
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Storage of food
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Assimilation of food
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Respiration
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Translocation of organic nutrients
B
Correct answer
Explanation
Orchid roots perform the function of food manufacture after greening.
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providing nutrition to root
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cell division
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supporting the root
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protecting the root
D
Correct answer
Explanation
Root cap covers the meristem and has protective function.
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Meristem protection
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Gravity perception
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Mucilage secretion
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Starch granules storage
B
Correct answer
Explanation
Statocytes are involved in gravity perception in plants.
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Oxidation of glucose
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Energy production
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Electron transport
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Production of hormones in plants
C
Correct answer
Explanation
Cytochrome is involved in electron transport chain as it has the ability to undergo reversible oxidation.
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Breakdown and utilisation of proteins
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Cofactor for several enzymes
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Intermediate in the biosynthesis of androgens
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Acts as neurotransmitter
C
Correct answer
Explanation
Stigmasterol acts as an intermediate in the biosynthesis of androgens.
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Floating and balancing
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Photosynthesis
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Absorption of atmospheric moisture
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Absorption of atmospheric air
C
Correct answer
Explanation
Velamen tissue performs the function of absorbing atmospheric moisture.
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controlling movement of molecules between the cytosol and sap
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storing useful material
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digesting waste proteins
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excreting unwanted materials
D
Correct answer
Explanation
The central vacuole of the plant cell does not excrete unwanted materials.
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Lubrication and moistening
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Digestion and dissolution of soluble substances
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Emulsification and chewing
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All of the above
D
Correct answer
Explanation
Saliva have all of the above functions, i.e. emulsification, moistening, lubrication, digestion and dissolution of food and substances.
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Production of bile
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Storage of bile
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Removal of toxic material
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Storage of glycogen and fat droplets
B
Correct answer
Explanation
The main purpose of gall bladder is to store bile. At any time, 30-60 cu. mm bile is stored within the gall bladder.
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protective
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house keeping
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secreting
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strengthening
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Digestion of food
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Assimilation of food
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Absorption of water
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Storage of food
C
Correct answer
Explanation
The main function of the large intestine is the absorption of water from food.
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Path for air
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Filtration
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Air conditioning
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Moistening
B
Correct answer
Explanation
Nasal hair acts as a filter because large-sized bacteria, spores, dust particles, etc. which are inhaled with air get entangled between the nasal hair and removed.