Passive and Active Transport Practice

Front

What is passive transport?

Back

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

Front

What are the main types of passive transport?

Back

The main types of passive transport are diffusion, facilitated diffusion, and osmosis.

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from an area of high concentration to an area of low concentration.

Front

What is facilitated diffusion?

Back

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

Front

What is osmosis?

Back

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

Front

What is active transport?

Back

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

Front

What is the concentration gradient?

Back

The concentration gradient is the difference in the concentration of a substance between two areas.

Front

How does the concentration gradient affect the rate of diffusion?

Back

The rate of diffusion increases as the concentration gradient increases.

Front

What is phagocytosis?

Back

Phagocytosis is a form of active transport where a cell engulfs large particles or cells.

Front

Why is ATP important for active transport?

Back

ATP provides the energy needed to move substances against their concentration gradient.