Unit 3 Lesson 3 Membrane Transport

Front

Hydrophilic means...

Back

water-loving

Front

What is the term for maintaining a constant internal state in a changing environment?

Back

Homeostasis

Front

What is the hydrophobic region of the cell membrane?

Back

The part of the membrane that repels water, typically composed of fatty acid tails.

Front

What is the movement of particles down the concentration gradient using protein "helpers"?

Back

Facilitated diffusion

Front

What type of transport do ion pumps represent?

Back

Active Transport

Front

What is the primary function of the cell membrane?

Back

To protect the cell and regulate what enters and exits.

Front

Define passive transport.

Back

The movement of substances across a cell membrane without the use of energy.

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.

Front

What is the difference between active transport and passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not.

Front

What is endocytosis?

Back

The process by which cells take in substances by engulfing them.