Review: Diffusion State Lab

Front

What is diffusion?

Back

Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration until equilibrium is reached.

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy.

Front

What is osmosis?

Back

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

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, water moves out of the cell, causing it to shrink.

Front

What happens to a cell in a hypotonic solution?

Back

In a hypotonic solution, water moves into the cell, causing it to swell and potentially burst.

Front

What is the role of the cell membrane in diffusion?

Back

The cell membrane is selectively permeable, allowing certain molecules to pass through while blocking others, facilitating diffusion.

Front

What is the significance of starch in diffusion experiments?

Back

Starch is a large molecule that cannot diffuse through the cell membrane, making it useful for demonstrating selective permeability.

Front

What is the purpose of using iodine in diffusion experiments?

Back

Iodine is used as an indicator to test for the presence of starch; it turns blue-black in the presence of starch.

Front

What is equilibrium in the context of diffusion?

Back

Equilibrium is the state reached when the concentration of molecules is equal on both sides of a membrane, resulting in no net movement.

Front

What is the difference between diffusion and osmosis?

Back

Diffusion refers to the movement of any molecules, while osmosis specifically refers to the movement of water molecules.