Cell Transport Review

Front

What is diffusion?

Back

The movement of particles from an area of high concentration to an area of low concentration without the use of energy.

Front

What is facilitated diffusion?

Back

A process where molecules pass through a cell membrane via a protein channel, moving from high to low concentration without energy.

Front

What is active transport?

Back

The movement of molecules against their concentration gradient, from low to high concentration, requiring energy.

Front

What is osmosis?

Back

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

Front

What is a hypotonic solution?

Back

A solution that has a lower concentration of solutes compared to the inside of a cell, causing the cell to swell as water enters.

Front

What is a hypertonic solution?

Back

A solution that has a higher concentration of solutes compared to the inside of a cell, causing the cell to shrink as water leaves.

Front

What is an isotonic solution?

Back

A solution that has the same concentration of solutes as the inside of a cell, resulting in no net movement of water.

Front

What role do phospholipids play in the cell membrane?

Back

Phospholipids form the basic structure of the cell membrane, creating a bilayer that is selectively permeable.

Front

What is the function of protein channels in the cell membrane?

Back

Protein channels facilitate the transport of specific molecules across the cell membrane, aiding in facilitated diffusion.

Front

What is the difference between passive and active transport?

Back

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