Free Homeostasis MCQs with Answers

• A. Anuria
• B. Deamination
• C. Uremia
• D. Oliguria

Explanation: Anuria is the medical term for the complete cessation of urine production by the kidneys, often resulting from severe kidney damage or…

• A. 99.0%
• B. 99.1%
• C. 99.5%
• D. Approximately 99.5%

Explanation: More than 99.5% water from filtrate is reabsorbed in human and mammalian kidney.

• A. Glomerulus
• B. Convoluted Tubule
• C. Loop of Henle
• D. Bowman's Capsule

Explanation: The correct answer is the glomerulus because it is the primary site of filtration within the nephron, making it particularly vulnerable to…

• A. Sweat - Temperature regulation
• B. Saliva - Sense of taste
• C. Sebum - Sexual attraction
• D. Humerus - Hindleg

Explanation: Sweat is secreted by sweat glands of skin and helps in regulating body temperature.

• A. Tendency to change with environmental changes
• B. Tendency to resist change and maintain stability
• C. Disturbance in regulatory control
• D. Use of plants and animal extracts in homeopathy

Explanation: Homoeostasis is the regulation, by an organism, of the chemical composition of its body fluids and other aspects of its internal…

• A. Flow of solvent (water) through a semipermeable membrane from a higher to a less concentrated solution
• B. Flow of solvent (water) through a semipermeable membrane from a less to a higher concentrated solution
• C. Flow of a solute through a semipermeable membrane
• D. Flow of water without a membrane

Explanation: Osmosis is the process by which water, the solvent, moves across a semipermeable membrane from an area of low solute concentration to an…

• A. Aldosterone
• B. Parathormone
• C. Anti-diuretic hormone
• D. Vasopressin

Explanation: Parathormone, or parathyroid hormone, is responsible for increasing the reabsorption of calcium ions in the nephron, particularly in the…

• A. An artificial kidney
• B. Filtering it within abdomen
• C. Both A and B
• D. Removing waste products and excess fluid from blood

Explanation: Dialysis serves the function of the kidneys when they fail by removing waste products, excess salts, and excess water from the blood.

• A. Even though it was a winter wedding, the sun smiled down on proceeding all day.
• B. Even though it was a winter wedding, the sun smiled down proceedings all day.
• C. Even though it was a winter wedding, sun smiled down on proceedings all day.
• D. Even though it was a winter wedding, the sun smiled down on proceedings all day.

Explanation: The sentence is structured correctly, using the phrase "the sun smiled down on proceedings" to describe the weather during the wedding.

• A. Creatinine
• B. Ammonia
• C. Urea
• D. Uric acid

Explanation: Excretion is the removal of chemical waste from the body produced by metabolic processes within cells.

• A. Photosynthesis
• B. Ingesiton
• C. Assimilation
• D. Deamination

Explanation: Nitrogenous wastes are produced as a result of "deamination". The breakdown of amino acids releases nitrogen-containing amine groups…

• A. Ammonotelic
• B. Ureotelic
• C. Uricotelic
• D. None of these

Explanation: Different ways of excreting 1 gram of nitrogen require different amounts of water so they are useful for different kinds of animals.

• A. Detoxifies many chemical poisons
• B. Breaks down ammonia for excretion by the kidneys
• C. Produces urea and uric acids from the nitrogen of amino acids
• D. All of the above

Explanation: The liver is an organ that comes into play after consumption of alcohol, as you can remember excess alcohol consumption can result in…

• A. Pituitary gland
• B. Adrenal gland
• C. Rectal gland
• D. Both Pituitary and Rectal glands

Explanation: The pituitary gland's posterior lobe is largely made up of axons of neurosecretory cells of the hypothalamus where ADH is produced.

• A. Anhydrobiosis
• B. Osmoregulators
• C. Thermoregulatory
• D. Osmoconformers

Explanation: "Osmoregulators" tightly regulate their body osmolarity, which always stays constant and is more common in the animal kingdom.

• A. Kangaroo rat
• B. Pig
• C. Camel
• D. Kangaroo

Explanation: Kangaroo rats, because their habitats are hot and dry, must conserve water.

• A. Netted capillaries
• B. Afferent capillaries
• C. Peritubular capillaries
• D. Vasa recta

Explanation: The network of capillaries parallel to the loop of henle is called vasa recta.

• A. Ultrasound
• B. Lithotripsy
• C. Dialysis
• D. X-rays

Explanation: Extracorporeal shock wave lithotripsy is a technique for treating stones in the kidney and ureter that does not require surgery.

• A. Aldosterone
• B. ADH
• C. Glucosterone
• D. Thyroxin

Explanation: Antidiuretic hormone (ADH)is a chemical produced in the brain that causes the kidneys to release less water, decreasing the amount of…

• A. Hypothalamus
• B. Medulla
• C. Cerebrum
• D. Pons

Explanation: Hypothalamus consists of a homeostatic thermostat in the brain as it regulates a wide spectrum of physiological functions such as hunger…