Solutions A and B are separated by a selectively permeable barrier. Over time, the level of fluid on side A increases. Which solution initially had the higher concentration of solute?

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Understand the concept of osmosis: Osmosis is the movement of water across a selectively permeable membrane from a region of lower solute concentration to a region of higher solute concentration.

Identify the direction of fluid movement: Since the fluid level on side A increases, water is moving into side A from side B.

Interpret the movement in terms of solute concentration: Water moves toward the side with the higher solute concentration to balance solute levels on both sides.

Conclude which side had the higher solute concentration initially: Because water moved into side A, side A must have had the higher solute concentration initially.

Summarize the reasoning: The increase in fluid level on side A indicates that side A had a higher solute concentration, causing water to move there by osmosis.

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Selective Permeability

A selectively permeable barrier allows certain molecules, typically solvent molecules like water, to pass through while blocking others, such as solute particles. This property is crucial in processes like osmosis, where solvent movement occurs to balance solute concentrations across the barrier.

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Clonal Selection

Osmosis

Osmosis is the movement of solvent molecules through a selectively permeable membrane from a region of lower solute concentration to a region of higher solute concentration. This process aims to equalize solute concentrations on both sides, often causing a change in fluid levels.

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Osmosis

Solute Concentration and Fluid Level Relationship

When two solutions are separated by a selectively permeable membrane, the side with higher solute concentration draws solvent in, increasing its fluid level. Therefore, an increase in fluid level on side A indicates that side B initially had the higher solute concentration.

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