Cell Membrane/Transport

Front

What is the state of a cell when material passes in and out at equal rates with no concentration difference?

Back

Equilibrium

Front

What describes an isotonic environment?

Back

Concentrations of water are equal inside and outside the cell.

Front

What is the hydrophilic portion of the cell membrane?

Back

The part of the phospholipid that is attracted to water.

Front

What structure helps large molecules cross the cell membrane?

Back

Transport proteins.

Front

What does 'bilayer' mean in the context of cell membranes?

Back

Two layers.

Front

What is the primary function of the cell membrane?

Back

To protect the cell and regulate what enters and exits.

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 selectively permeable membrane.

Front

What is active transport?

Back

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

Front

What are phospholipids?

Back

Molecules that make up the cell membrane, consisting of a hydrophilic head and hydrophobic tails.