Cell Membrane and Cell Transport

Front

What is passive transport?

Back

Passive transport is the movement of molecules across a cell membrane without the use of energy, relying on concentration gradients.

Front

What happens to water movement in an isotonic solution?

Back

In an isotonic solution, water flows in and out of the cell at equal rates, maintaining cell size.

Front

Define hypertonic solution in relation to cell concentration.

Back

A hypertonic solution has a higher concentration of solutes outside the cell than inside, causing water to flow out of the cell.

Front

What is the role of the cell wall in plant cells?

Back

The cell wall provides structural support and protection, preventing plant cells from bursting in hypotonic solutions.

Front

What is equilibrium in the context of cell transport?

Back

Equilibrium is the state where the concentration of solutes is equal inside and outside the cell, resulting in no net movement of water.

Front

What is the difference between active and passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What occurs to a red blood cell in a hypotonic solution?

Back

In a hypotonic solution, a red blood cell will swell and may burst due to the influx of water.

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane allows certain molecules to pass through while blocking others, crucial for maintaining homeostasis.

Front

How does a plant cell respond to a hypertonic solution?

Back

In a hypertonic solution, a plant cell will lose water, causing the cell membrane to pull away from the cell wall, a process called plasmolysis.