Cell Transport Review

Front

What is diffusion?

Back

Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is active transport?

Back

Active transport is the movement of substances across a cell membrane that requires energy, moving materials against the concentration gradient.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses protein channels to help move molecules across the cell membrane without using energy.

Front

What are the two types of passive transport?

Back

The two types of passive transport are osmosis and diffusion.

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is the role of the cell membrane in cell transport?

Back

The cell membrane controls the movement of substances in and out of the cell, maintaining homeostasis.

Front

What is equilibrium in the context of cell transport?

Back

Equilibrium is the state where the concentration of molecules is equal on both sides of the membrane, resulting in no net movement.

Front

What is exocytosis?

Back

Exocytosis is the process by which a cell expels materials in vesicles that fuse with the cell membrane.

Front

What is endocytosis?

Back

Endocytosis is the process by which a cell takes in materials by engulfing them in a vesicle.

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy and moves substances down the concentration gradient, while active transport requires energy and moves substances against the gradient.