Cell Membrane Review

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.

Front

What is active transport?

Back

The movement of molecules from a region of low concentration to a region of high concentration, requiring energy.

Front

What is a hypotonic solution?

Back

A solution with a lower concentration of solutes compared to the inside of the cell, causing water to move into the cell.

Front

What are the three types of passive transport?

Back

Diffusion, osmosis, and facilitated diffusion.

Front

What is facilitated diffusion?

Back

The process of passive transport of molecules across a cell membrane via specific transmembrane integral proteins.

Front

What is diffusion?

Back

The movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is a hypertonic solution?

Back

A solution with a higher concentration of solutes compared to the inside of the cell, causing water to move out of the cell.

Front

What role do proteins play in active transport?

Back

Proteins act as pumps to move molecules through the cell membrane against their concentration gradient.

Front

What is isotonic solution?

Back

A solution with the same concentration of solutes as the inside of the cell, resulting in no net movement of water.

Front

What is the cell membrane?

Back

A biological membrane that separates and protects the interior of all cells from the outside environment.