Cell Transport

Front

What is homeostasis?

Back

Balance, or maintaining relatively stable conditions.

Front

What is the function of the plasma membrane?

Back

The cell component that controls what can enter and exit the cell.

Front

Equilibrium refers to the concentration of molecules on one side of the membrane being _________ to the other side of the membrane.

Back

Equal

Front

What does semi-permeable mean?

Back

To allow only some materials across the membrane.

Front

What is the sodium-potassium pump an example of?

Back

Active transport.

Front

What is diffusion?

Back

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

Front

What is osmosis?

Back

The diffusion of water across a semi-permeable membrane.

Front

What is facilitated diffusion?

Back

The process of passive transport of molecules across a membrane via specific transmembrane integral proteins.

Front

What is active transport?

Back

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

Front

What is endocytosis?

Back

The process by which cells internalize substances from their external environment.