Cell Membrane and Transport

Front

What is Passive Transport?

Back

Passive Transport is the movement of molecules across the cell membrane from an area of high concentration to an area of low concentration without the use of energy.

Front

What is Active Transport?

Back

Active Transport is the movement of molecules against the concentration gradient from a low concentration to a high concentration, requiring energy.

Front

What is the function of the Cell Membrane?

Back

The Cell Membrane controls the cellular traffic, regulating what enters and exits the cell.

Front

What is Osmosis?

Back

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

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.

Front

What is a Carrier Protein?

Back

A Carrier Protein is a type of protein that transports substances across a cell membrane.

Front

What is the Concentration Gradient?

Back

The Concentration Gradient is the difference in the concentration of a substance between two areas.

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 role of energy in Active Transport?

Back

Energy is required in Active Transport to move molecules against their concentration gradient.

Front

What are Solutes?

Back

Solutes are substances that are dissolved in a solution, such as salts or sugars.