Osmosis is defined as
Correct answer: B. Flow of solvent (water) through a semipermeable membrane from a less to a higher concentrated solution
- 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 area of high solute concentration. This movement aims to equalize solute concentrations on both sides of the membrane. Option B correctly describes this process. Option A describes the reverse of osmosis. Option C incorrectly focuses on solute movement, which is not osmosis. Option D disregards the necessity of a membrane, which is essential for osmosis.
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About Homeostasis
Homeostasis maintains a stable internal environment through the kidney and urinary system, thermoregulation and excretion. The kidney topics include filtration, selective reabsorption, urine formation and water balance, while thermoregulation involves sweating, vasodilation, vasoconstriction and hormonal control; excretion is different from egestion, which removes undigested food.
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