Question

Describe the concentration of the solution outside the cell as hypertonic or hypotonic if that solute is being transported across the cell membrane by(b) facilitated transport.

Accepted Answer

Understand the terms 'hypertonic' and 'hypotonic': A hypertonic solution has a higher concentration of solutes compared to the inside of the cell, while a hypotonic solution has a lower concentration of solutes compared to the inside of the cell. Review the concept of facilitated transport: Facilitated transport is a type of passive transport where molecules move across the cell membrane through protein channels or carriers, without requiring energy, and typically down their concentration gradient. Determine the direction of solute movement: In facilitated transport, solutes move from an area of higher concentration to an area of lower concentration. This means the solute is moving down its concentration gradient. Analyze the concentration of the solution outside the cell: If the solute is being transported out of the cell via facilitated transport, the solution outside the cell must initially have a lower concentration of solutes (hypotonic) compared to the inside of the cell. Conclude the relationship: Based on the movement of solutes via facilitated transport, the solution outside the cell can be described as hypotonic relative to the inside of the cell.

Describe the concentration of the solution outside the cell as hypertonic or hypotonic if that solute is being transported across the cell membrane by
(b) facilitated transport.

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Concetti chiave

Hypertonic Solution

Hypotonic Solution

Facilitated Transport