Cell Membrane

Front

What is Passive Transport?

Back

The movement of particles across the membrane from an area of high concentration to an area of low concentration.

Front

What does the term Hydrophobic mean?

Back

Water-fearing; refers to molecules that do not interact well with water.

Front

What does Hydrophilic mean?

Back

Water-loving; refers to molecules that interact well with water.

Front

What is the hydrophobic region of the cell membrane?

Back

The part of the membrane that repels water, typically made up of fatty acid tails of phospholipids.

Front

What does HYPO mean in biological terms?

Back

It means low, often used to describe solutions with lower solute concentration.

Front

What is the structure of a phospholipid?

Back

A molecule with a hydrophilic (water-loving) head and two hydrophobic (water-fearing) tails.

Front

What is the function of the cell membrane?

Back

To protect the cell, control what enters and exits, and facilitate communication with other cells.

Front

What is the difference between active and passive transport?

Back

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

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is a selectively permeable membrane?

Back

A membrane that allows certain molecules to pass through while blocking others.