Cell Membrane Structure and Function

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 main components of the cell membrane?

Back

Phospholipids, proteins, carbohydrates, and cholesterol.

Front

Define phospholipid.

Back

A molecule that makes up the cell membrane, consisting of a hydrophilic (water-attracting) head and two hydrophobic (water-repelling) tails.

Front

What role do proteins play in the cell membrane?

Back

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

Front

What is the significance of carbohydrates in the cell membrane?

Back

Carbohydrates help in cell recognition and communication.

Front

Explain the fluid mosaic model of the cell membrane.

Back

The fluid mosaic model describes the cell membrane as a flexible layer made of lipid molecules with proteins embedded, allowing for movement and interaction.

Front

What is the role of cholesterol in the cell membrane?

Back

Cholesterol helps to stabilize the membrane's fluidity and structure.

Front

What does it mean for a membrane to be selectively permeable?

Back

It means that the membrane allows certain substances to pass while blocking others.

Front

Identify the nonpolar region of the cell membrane.

Back

The hydrophobic tails of phospholipids.

Front

Which macromolecule is NOT a component of the cell membrane?

Back

Nucleic Acids.