OSMOSIS/DIFFUSION

Front

What is osmosis?

Back

Osmosis is the movement of water molecules from an area of high concentration to an area of low concentration across a semi-permeable membrane.

Front

What is diffusion?

Back

Diffusion is the process by which molecules move from an area of high concentration to an area of low concentration.

Front

What does selective permeability mean?

Back

Selective permeability is the ability of a cell membrane to allow some substances to pass through while preventing others.

Front

What happens to an animal cell in a hypertonic solution?

Back

An animal cell placed in a hypertonic solution will shrink due to the loss of water.

Front

What happens to an egg placed in pure water?

Back

An egg placed in pure water will gain water and swell.

Front

What is a hypertonic solution?

Back

A hypertonic solution has a higher concentration of solutes compared to the inside of a cell, causing water to move out of the cell.

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes compared to the inside of a cell, causing water to move into the cell.

Front

What is isotonic solution?

Back

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

Front

What role do cell membranes play in osmosis and diffusion?

Back

Cell membranes regulate the movement of substances in and out of the cell, allowing for osmosis and diffusion to occur.

Front

What is the significance of concentration gradients in diffusion?

Back

Concentration gradients drive the movement of molecules during diffusion, as substances move from areas of high concentration to low concentration.