Cell Membrane and Passive Transport

Front

What is the primary component of the cell membrane?

Back

Phospholipids

Front

What does 'bilayer' refer to in the context of the cell membrane?

Back

Two layers

Front

What are the two parts of a phospholipid?

Back

Hydrophilic Head and Hydrophobic Tail

Front

What is the hydrophobic region of the cell membrane?

Back

The part that repels water, typically the tails of phospholipids.

Front

What are the two main types of passive transport?

Back

Osmosis and diffusion.

Front

What is osmosis?

Back

The movement of water across a semipermeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is diffusion?

Back

The movement of molecules from an area of high concentration to an area of low concentration.

Front

What role do proteins play in the cell membrane?

Back

They assist in transport, act as receptors, and provide structural support.

Front

What is the function of cholesterol in the cell membrane?

Back

To maintain fluidity and stability of the membrane.

Front

What does 'selectively permeable' mean?

Back

The cell membrane allows certain substances to pass while blocking others.