Front

What is active transport?

Back

Active transport is the movement of substances across a cell membrane against their concentration gradient, requiring energy in the form of ATP.

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, occurring along the concentration gradient.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process of moving substances across a cell membrane through protein channels, without using ATP, and along their concentration gradient.

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is endocytosis?

Back

Endocytosis is a type of bulk transport where cells engulf large particles or liquids by enclosing them in a membrane.

Front

What is exocytosis?

Back

Exocytosis is the process by which a cell expels materials in vesicles that fuse with the cell membrane.

Front

What role does ATP play in active transport?

Back

ATP provides the energy required for active transport to move substances against their concentration gradient.

Front

What are ions?

Back

Ions are charged particles that can be positively charged (cations) or negatively charged (anions) and often require active transport to cross cell membranes.

Front

What is the concentration gradient?

Back

The concentration gradient is the difference in the concentration of a substance across a space, driving the movement of substances during diffusion.

Front

What is the difference between active and passive transport?

Back

Active transport requires energy (ATP) to move substances against their gradient, while passive transport does not require energy and moves substances along their gradient.