Diffusion/Osmosis Extra Practice

Front

What is osmosis?

Back

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

Front

What is active transport?

Back

Active transport is the movement of molecules against a concentration gradient, requiring energy input.

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 does passive transport mean?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, typically along a concentration gradient.

Front

What is an isotonic solution?

Back

An isotonic solution is one where the concentration of solutes is equal inside and outside the cell, resulting in no net movement of water.

Front

What happens to cells in a hypertonic solution?

Back

In a hypertonic solution, cells lose water and shrink due to the higher concentration of solutes outside the cell.

Front

What happens to cells in a hypotonic solution?

Back

In a hypotonic solution, cells gain water and may expand or burst due to the lower concentration of solutes outside the cell.

Front

What is the role of concentration gradients in diffusion?

Back

Concentration gradients drive diffusion, as molecules move from areas of higher concentration to areas of lower concentration.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses transport proteins to help move molecules across the cell membrane.

Front

What is the difference between osmosis and diffusion?

Back

Osmosis specifically refers to the movement of water, while diffusion refers to the movement of any type of molecules.