Cell Membrane

Front

What is the main function of the plasma membrane?

Back

To regulate what enters and leaves the cell.

Front

What is a hydrophobic substance?

Back

A substance that does not mix with water, such as oil.

Front

What part of a phospholipid is hydrophilic?

Back

The phosphate 'head'.

Front

Define the cell (plasma) membrane.

Back

A flexible boundary of a cell that separates a cell from its surroundings.

Front

Where are carbohydrates found in the plasma membrane?

Back

On the outside of the membrane.

Front

What are phospholipids?

Back

Molecules that make up the cell membrane, consisting of hydrophilic heads and hydrophobic tails.

Front

What is the role of cholesterol in the cell membrane?

Back

To maintain fluidity and stability of the membrane.

Front

What does selectively permeable mean?

Back

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

Front

What are integral proteins?

Back

Proteins that span the entire membrane and are involved in transport and communication.

Front

What is the fluid mosaic model?

Back

A model that describes the structure of the plasma membrane as a mosaic of various components that move freely.