Cell Membrane and Transport

Front

What is the movement of particles from an area of high concentration to an area of low concentration called?

Back

Diffusion

Front

What is the term for cell membrane transport that occurs without energy?

Back

Passive transport

Front

What are the two parts of a phospholipid called?

Back

Hydrophilic Head, Hydrophobic Tail

Front

What does passive transport require?

Back

No energy

Front

What is the hydrophilic portion of the cell membrane?

Back

The part that is attracted to water.

Front

What is the primary function of the cell membrane?

Back

To protect the cell and regulate what enters and exits.

Front

What is osmosis?

Back

The movement of water across a semipermeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is active transport?

Back

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

Front

What is the role of cholesterol in the cell membrane?

Back

To maintain fluidity and stability of the membrane.

Front

What are transport proteins?

Back

Proteins that help move substances across the cell membrane.