Cell Membrane and Cell Transport

Front

What are the channels and pumps in the cell membrane made of?

Back

Proteins

Front

What happens to a cell when the concentration of red molecules outside is higher than inside, and they cannot penetrate the cell?

Back

Water will leave the cell, and the cell will shrink.

Front

What is osmosis?

Back

The diffusion/movement of water.

Front

What structures in the cell membrane identify and communicate with the extracellular environment?

Back

Carbohydrate Chains.

Front

What is the state called when the amount of water inside and outside of a cell is equal?

Back

Equilibrium.

Front

What is the primary function of the cell membrane?

Back

To protect the cell and regulate what enters and exits.

Front

What is the phospholipid bilayer?

Back

A double layer of phospholipids that makes up the cell membrane.

Front

What role do cholesterol molecules play in the cell membrane?

Back

They help to stabilize the membrane's fluidity.

Front

What is diffusion?

Back

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

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy, while active transport does.