Cell Membrane and Cell Transport

Front

What is diffusion?

Back

Diffusion is the free movement of particles across a membrane with the concentration gradient.

Front

What is osmosis?

Back

Osmosis is the movement of water across a membrane.

Front

What indicates a molecule is in equilibrium?

Back

A molecule is in equilibrium when there are equal amounts inside and outside the cell.

Front

What type of diffusion is osmosis?

Back

Osmosis is a type of diffusion specifically for water.

Front

What is a hypertonic solution?

Back

A hypertonic solution has a higher concentration of solutes outside the cell than inside.

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes outside the cell than inside.

Front

What is an isotonic solution?

Back

An isotonic solution has equal concentrations of solutes inside and outside the cell.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process of passive transport of molecules across a membrane via specific transmembrane integral proteins.

Front

What is active transport?

Back

Active transport is the movement of molecules against their concentration gradient, requiring energy.

Front

What role do cell membranes play in transport?

Back

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