Phospholipid Bilayer

Front

What is the phospholipid bilayer?

Back

A double layer of phospholipids that makes up the cell membrane, providing structure and regulating what enters and exits the cell.

Front

What are the main components of the phospholipid bilayer?

Back

Phospholipids, proteins, cholesterol, and carbohydrates.

Front

What is the function of proteins in the phospholipid bilayer?

Back

Proteins help with signaling, transport, and acting as enzymes.

Front

What does 'semipermeability' mean in the context of the phospholipid bilayer?

Back

The ability of the membrane to allow only certain molecules to pass through while blocking others.

Front

What role do carbohydrates play in the phospholipid bilayer?

Back

Carbohydrates are involved in cell recognition and signaling.

Front

How does cholesterol affect the fluidity of the membrane?

Back

Cholesterol increases membrane fluidity, allowing for better movement of proteins and lipids.

Front

What does 'hydrophilic' mean?

Back

'Water loving'; refers to molecules that are attracted to water.

Front

What does 'hydrophobic' mean?

Back

'Water fearing'; refers to molecules that repel water.

Front

What is the thickness of the lipid bilayer?

Back

The lipid bilayer is approximately 2 nanometers thick.

Front

Why is the phospholipid bilayer described as a fluid mosaic model?

Back

Because it is composed of various components that move freely within the layer, creating a dynamic structure.