Cell Membrane & Cell Transport

Front

What are the two parts of a phospholipid?

Back

Hydrophilic Head and Hydrophobic Tail.

Front

What is osmosis?

Back

The movement of water across a membrane.

Front

Which particles can diffuse through the phospholipid bilayer?

Back

Oxygen and carbon dioxide.

Front

What is diffusion?

Back

When molecules move from a high concentration to a low concentration.

Front

What does selectively permeable mean in relation to the cell membrane?

Back

Certain things can enter while others cannot.

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 structure of the cell membrane primarily composed of?

Back

A phospholipid bilayer.

Front

What role do proteins play in the cell membrane?

Back

They assist in transport and communication across the membrane.

Front

What is the difference between passive and active transport?

Back

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

Front

What is an example of active transport?

Back

Sodium-potassium pump.