Front

What is osmosis?

Back

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

Define diffusion.

Back

The process by which molecules spread from areas of high concentration to areas of low concentration.

Front

What is active transport?

Back

The movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy.

Front

What does hypertonic mean?

Back

A solution with a higher concentration of solutes compared to another solution.

Front

What does hypotonic mean?

Back

A solution with a lower concentration of solutes compared to another solution.

Front

What is isotonic?

Back

A solution that has the same concentration of solutes as another solution.

Front

Explain facilitated diffusion.

Back

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

Front

What is a concentration gradient?

Back

A difference in the concentration of a substance across a space.

Front

What role do cell membranes play in cellular processes?

Back

Cell membranes control the movement of substances in and out of the cell, maintaining homeostasis.

Front

What is the significance of potassium in cells?

Back

Potassium is essential for various cellular functions, including maintaining membrane potential and nerve impulse transmission.