Cell Transport Review

Front

What are the 2 kinds of passive transport?

Back

Diffusion and osmosis.

Front

Active transport requires _____ to move materials across the cell membrane.

Back

energy.

Front

During active transport, molecules move from an area of ______ concentration to an area of _____ concentration.

Back

lower concentration to higher concentration.

Front

What is the amount of substance in a specific volume called?

Back

Concentration.

Front

What is osmosis?

Back

The movement of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is diffusion?

Back

The process by which molecules spread from areas of high concentration to areas of low concentration.

Front

What is the role of transport proteins in cell transport?

Back

Transport proteins help move substances across the cell membrane, especially those that cannot easily pass through the lipid bilayer.

Front

What is a concentration gradient?

Back

A difference in the concentration of a substance across a space.

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 a selectively permeable membrane?

Back

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