Passive transport is a type of membrane transport in which chemicals are moved across cell membranes without the need for energy. Movement of molecules against their concentration gradient is calledįrequently Asked Questions (FAQs) 1. The difference in the concentration of a substance from one region to another region is calledĪnswer: Option 2 b. In passive transport, particles will diffuse along a concentration gradient, from higher concentrations to lower concentrations, until they are uniformly distributed. Related Links Density Of Water (g/ml)| Fresh Water and Sea Water Mechanical Energy| 7 Daily Life Examples Mass vs Weight| 5 Simple Examples Centre of Mass and Centre of Gravity Convection| Atmospheric Motions in the Vertical Direction SummaryĪ concentration gradient occurs when the concentration of particles is higher in one region than in another. Active transport mechanisms necessitate the use of cellular energy to move the materials, whereas passive transport does not necessitate the use of cellular energy. Selectively Permeable MembranesĪ selectively permeable cell membrane permits specific molecules or ions to pass through active or passive transport. The rate of osmosis also increases as the temperature rises. The faster the rate of osmosis, the bigger the difference in concentration. The concentration difference and temperature have an impact on osmosis. Water and other molecules move through a selectively permeable membrane during the osmosis process in order to balance the concentration of other substances. The process by which an ion or molecule moves through a cell wall via a concentration gradient, or from a high concentration to a low concentration, is known as passive transport or passive diffusion.
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