Cell Transport-1

Front

What is active transport?

Back

The movement of molecules against a concentration gradient, requiring energy.

Front

What is simple diffusion?

Back

The movement of molecules from an area of higher concentration to an area of lower concentration without the use of energy.

Front

What is facilitated diffusion?

Back

The process of passive transport of molecules across a membrane via specific transmembrane integral proteins.

Front

What is osmosis?

Back

The diffusion of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What does passive transport require?

Back

Passive transport requires no energy.

Front

What is a concentration gradient?

Back

A difference in the concentration of a substance across a space.

Front

What is the role of channel proteins in facilitated diffusion?

Back

Channel proteins help transport particles that are too large to enter the membrane without using energy.

Front

What is the difference between active transport and passive transport?

Back

Active transport requires energy to move molecules against a concentration gradient, while passive transport does not require energy.

Front

What is an example of simple diffusion?

Back

Oxygen moving from the lungs into red blood cells due to a higher concentration in the air.

Front

What is an example of facilitated diffusion?

Back

Glucose entering a cell through a glucose transporter protein.