Cell Transport Practice

Front

What regulates what enters and leaves a cell?

Back

Cell Membrane

Front

In passive transport, molecules move from an area of __________ concentration to an area of __________ concentration.

Back

high, low

Front

In active transport, molecules usually move from an area of __________ concentration to an area of __________ concentration.

Back

low, high

Front

What does permeable mean?

Back

Things can pass through.

Front

Which type of transport requires an input of energy?

Back

Active Transport

Front

What is the main function of the cell membrane?

Back

To control the movement of substances in and out of the cell.

Front

What is passive transport?

Back

The movement of molecules without the use of energy, from high to low concentration.

Front

What is active transport?

Back

The movement of molecules against their concentration gradient, requiring energy.

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.

Front

What is a concentration gradient?

Back

The difference in concentration of a substance between two areas.