Passive Transport

Front

What is passive transport?

Back

Passive transport is the movement of molecules across a cell membrane without the use of energy, relying on concentration gradients.

Front

What is the most important feature of a cell's phospholipid membrane?

Back

It is selectively permeable.

Front

What is diffusion?

Back

Diffusion is the movement of molecules from an area of high concentration to an area of low concentration.

Front

What is the concentration gradient?

Back

The concentration gradient is the difference in concentrations of molecules in two areas.

Front

What is equilibrium in the context of diffusion?

Back

Equilibrium is the state where the concentration of molecules is equal on both sides of the membrane.

Front

What factors affect the rate of diffusion?

Back

Factors include temperature, concentration gradient, and the size of the molecules.

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules across a selectively permeable membrane.

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 role do transport proteins play in passive transport?

Back

Transport proteins help move substances across the cell membrane without using energy.

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy, while active transport requires energy to move substances against their concentration gradient.