Cellular Transport

Front

What is a hypertonic solution?

Back

A solution with a higher concentration of solutes than a cell.

Front

Define endocytosis.

Back

The process of taking materials into the cell by infolding of the cell membrane.

Front

What is facilitated diffusion?

Back

Movement of materials from high to low concentration by means of a transport protein; a form of passive transport.

Front

What is a semi-permeable membrane?

Back

A membrane that allows certain molecules or ions to pass through it by diffusion and doesn't allow others.

Front

Explain diffusion.

Back

Movement of particles through the cell membrane from high to low concentrations.

Front

What is osmosis?

Back

The diffusion of water across a semi-permeable membrane.

Front

What is active transport?

Back

The movement of substances against their concentration gradient, requiring energy.

Front

What role do transport proteins play in cellular transport?

Back

Transport proteins facilitate the movement of substances across the cell membrane.

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 gradient.

Front

What is a hypotonic solution?

Back

A solution with a lower concentration of solutes than a cell.