Diffusion and Osmosis

Front

What is diffusion?

Back

Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration until equilibrium is reached.

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 is a selectively permeable membrane?

Back

A selectively permeable membrane allows certain molecules or ions to pass through it while blocking others.

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 isotonic solution?

Back

An isotonic solution has the same concentration of solutes as the cell, resulting in no net movement of water.

Front

How does temperature affect diffusion?

Back

Higher temperatures increase the kinetic energy of molecules, leading to faster diffusion rates.

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 role does the cell membrane play in osmosis?

Back

The cell membrane regulates the movement of water and solutes in and out of the cell during osmosis.

Front

What is turgor pressure?

Back

Turgor pressure is the pressure exerted by the fluid inside the central vacuole of a plant cell against the cell wall, helping maintain its shape.