Active and Passive Transport

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy.

Front

What is passive transport?

Back

Passive transport is the movement of molecules across a cell membrane without the use of energy, typically from a region of higher concentration to a region of lower concentration.

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from areas of high concentration to areas of low concentration until they are evenly distributed.

Front

What is osmosis?

Back

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

Front

What is the role of energy in active transport?

Back

Energy is required in active transport to move molecules against their concentration gradient.

Front

Can active transport occur in both plant and animal cells?

Back

Yes, active transport occurs in both plant and animal cells.

Front

What is an example of passive transport?

Back

An example of passive transport is the diffusion of oxygen into cells.

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane is a barrier that allows certain substances to pass through while blocking others.

Front

What is the difference between active and passive transport?

Back

The main difference is that active transport requires energy to move substances against their concentration gradient, while passive transport does not require energy.

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.