Diffusion & Osmosis Flashcard

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from an area of high concentration to an area of low concentration, resulting in an even distribution of particles.

Front

What is osmosis?

Back

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

Front

What does passive transport mean?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy by the cell.

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane allows certain substances to pass through while blocking others, maintaining the internal environment of the cell.

Front

What happens to a gummy bear in water over time?

Back

A gummy bear placed in water will absorb water through osmosis, causing it to expand.

Front

What is the difference between diffusion and osmosis?

Back

Diffusion refers to the movement of any molecules from high to low concentration, while osmosis specifically refers to the movement of water across a membrane.

Front

What is equilibrium in the context of diffusion?

Back

Equilibrium is the state reached when the concentration of molecules is equal throughout a space, resulting in no net movement of particles.

Front

What is the role of the cell wall in plant cells?

Back

The cell wall provides structural support and protection to plant cells, while the cell membrane controls the movement of substances in and out of the cell.

Front

What is active transport?

Back

Active transport is the movement of substances against their concentration gradient, requiring energy from the cell.

Front

What is the significance of concentration gradients in diffusion?

Back

Concentration gradients drive the movement of molecules during diffusion, with substances moving from areas of higher concentration to areas of lower concentration.