Cell Transport- Regents

Front

What are two examples of passive transport?

Back

Diffusion and Osmosis

Front

What type of transport is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses protein channels to help molecules cross the cell membrane.

Front

What does it mean for a molecule to diffuse down a concentration gradient?

Back

It means that the molecule moves from an area of high concentration to an area of low concentration.

Front

What is a concentration gradient?

Back

The difference in the concentration of a substance from one location to another.

Front

What is homeostasis?

Back

Homeostasis is how the body regulates itself for survival.

Front

What is osmosis?

Back

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

Front

What is active transport?

Back

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

Front

What role do protein channels play in facilitated diffusion?

Back

Protein channels provide a pathway for specific molecules to cross the cell membrane without using energy.

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy, while active transport requires energy to move substances against their concentration gradient.

Front

What is an example of a substance that uses facilitated diffusion?

Back

Glucose is an example of a substance that uses facilitated diffusion to enter cells.