Passive and Active Transport

Front

What is osmosis?

Back

Osmosis is a form of passive transport that involves the movement of water across a selectively permeable membrane.

Front

What is the primary function of the cell membrane?

Back

The cell membrane regulates what can enter and leave the cell.

Front

In passive transport, molecules move from an area of __________ concentration to an area of __________ concentration.

Back

high; low

Front

What is the process called when water diffuses across a membrane?

Back

Osmosis.

Front

What type of transport does not require energy?

Back

Passive transport.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses transport proteins to help move molecules across the cell membrane.

Front

What is active transport?

Back

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

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy and moves molecules from high to low concentration, while active transport requires energy to move molecules from low to high concentration.

Front

What role do transport proteins play in the cell membrane?

Back

Transport proteins help facilitate the movement of substances across the cell membrane.

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.