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CBSE Class 12-science Answered

Assertion : Sugar molecules are moving from left to right side. Reason : Water molecules can’t pass through semi permeable membrane.
Asked by msambyal307 | 30 May, 2021, 02:03: PM
Expert Answer

Molecules, like sugars, reach the carrier proteins in the membrane by diffusion and are then moved across the membrane from a region of high concentration to a region of low concentration. For example, if a cell is placed in a sugar solution the sugar molecules will diffuse and make contact with the carrier proteins located in the membrane.

Water moves across cell membranes by diffusion, in a process known as osmosis. Osmosis refers specifically to the movement of water across a semipermeable membrane, with the solvent (water, for example) moving from an area of low solute (dissolved material) concentration to an area of high solute concentration.

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