Diffusion and Osmosis

Front

What is osmosis?

Back

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

Front

What is the direction of water movement during osmosis?

Back

Water moves from high to low concentration.

Front

What happens to an animal cell in a hypertonic solution?

Back

An animal cell placed in a hypertonic (salty) solution will shrink (get smaller) due to water moving out of the cell.

Front

What type of transport requires energy?

Back

Active Transport requires energy to move substances against their concentration gradient.

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 is a selectively permeable membrane?

Back

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

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy and moves substances down their concentration gradient, while active transport requires energy to move substances against their concentration gradient.

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes compared to the inside of a cell, causing the cell to swell as water enters.

Front

What is a hypertonic solution?

Back

A hypertonic solution has a higher concentration of solutes compared to the inside of a cell, causing the cell to shrink as water exits.

Front

What is equilibrium in the context of diffusion?

Back

Equilibrium is reached when the concentration of molecules is the same throughout a space, and there is no net movement of molecules.