Osmosis & Diffusion Flashcard 1

Front

What is diffusion?

Back

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

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane.

Front

What does selectively permeable mean?

Back

Selectively permeable refers to a membrane that allows certain substances to pass through while blocking others.

Front

What is a concentration gradient?

Back

A concentration gradient is the difference in concentration of a substance across a space.

Front

What happens to molecules during diffusion?

Back

Molecules move from areas of high concentration to areas of low concentration until equilibrium is reached.

Front

What is an example of diffusion in everyday life?

Back

An example of diffusion is the smell of perfume spreading in a room.

Front

What is the role of energy in active transport?

Back

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

Front

What is an isotonic solution?

Back

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

Front

What is a hypertonic solution?

Back

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