Cell Transport

Front

What is diffusion?

Back

Diffusion is the process by which particles spread from an area of high concentration to an area of low concentration until they are evenly distributed.

Front

How long does diffusion last?

Back

Until the concentration of particles in the system is equal.

Front

What is active transport?

Back

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

Front

What is endocytosis?

Back

Endocytosis is a type of active transport where cells engulf substances from the outside environment.

Front

What is exocytosis?

Back

Exocytosis is a process where cells expel materials to the outside environment.

Front

What does selectively permeable mean?

Back

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

Front

What is osmosis?

Back

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

Front

What is equilibrium in terms of cell transport?

Back

Equilibrium is the state when the concentration of substances is equal inside and outside the cell.

Front

What part of the cell regulates what can enter and leave the cell?

Back

The cell membrane regulates what can enter and leave the cell.

Front

What is the role of the cell membrane?

Back

The cell membrane protects the cell and controls the movement of substances in and out.