Cell Membrane & Transport

Front

What does 'bilayer' mean?

Back

Two layers

Front

Can large molecules, such as glucose, easily pass through the cell membrane without any help?

Back

False - they need a protein channel

Front

What does semi-permeable mean?

Back

To allow only some materials across the membrane

Front

What is the main component of the cell membrane?

Back

Lipids

Front

What is the process called when materials are moved across a membrane from an area of low concentration to an area of high concentration?

Back

Active Transport

Front

What is the primary function of the cell membrane?

Back

To protect the cell and regulate what enters and exits

Front

What are the two main types of transport across the cell membrane?

Back

Passive transport and active transport

Front

What is osmosis?

Back

The diffusion of water across a semi-permeable membrane

Front

What role do proteins play in the cell membrane?

Back

They assist in transporting substances across the membrane

Front

What is the difference between passive transport and active transport?

Back

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