Cell Membrane Structure & Function

Front

What does 'bilayer' mean?

Back

Two layers.

Front

What is the structure labeled 'A'?

Back

Cholesterol.

Front

Which term describes the relatively constant internal balance within the cell that the cell membrane helps to maintain?

Back

Homeostasis.

Front

A phospholipid has two parts. What are they called?

Back

Hydrophilic head, Hydrophobic tail.

Front

What forms the channels and pumps in the phospholipid bilayer?

Back

Proteins.

Front

What is the primary function of the cell membrane?

Back

To protect the cell and regulate what enters and exits.

Front

What are phospholipids made of?

Back

Glycerol, two fatty acids, and a phosphate group.

Front

What role do carbohydrates play in the cell membrane?

Back

They are involved in cell recognition and signaling.

Front

What is the fluid mosaic model?

Back

A model that describes the structure of the cell membrane as a mosaic of various components that move fluidly.

Front

What is selective permeability?

Back

The ability of the cell membrane to allow certain substances to pass while blocking others.