Front

What is the primary function of the plasma membrane?

Back

To regulate what enters and leaves the cell.

Front

What is the process called when materials move from low concentration to high concentration across a membrane?

Back

Active Transport

Front

What is the hydrophobic region of the cell membrane?

Back

The part of the membrane that repels water, typically composed of fatty acid tails.

Front

Describe the movement of molecules through proteins in a membrane when moving from lower to higher concentration.

Back

Molecules are moving from a lower concentration to a higher concentration.

Front

What is osmosis?

Back

The movement of water across a membrane.

Front

What type of transport does not require energy?

Back

Passive Transport.

Front

What is the role of proteins in the cell membrane?

Back

Proteins assist in the transport of substances across the membrane and act as receptors.

Front

Define diffusion.

Back

The movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is the difference between active transport and passive transport?

Back

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

Front

What is a concentration gradient?

Back

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