Cell Membrane

Front

What is the main function of the cell membrane?

Back

The cell membrane controls the movement of substances in and out of the cell, providing protection and structural support.

Front

What are the main components of the cell membrane?

Back

The main components of the cell membrane are phospholipids, proteins, carbohydrates, and cholesterol.

Front

What is a phospholipid?

Back

A phospholipid is a molecule that has a hydrophilic (water-attracting) head and two hydrophobic (water-repelling) tails, forming the bilayer of the cell membrane.

Front

What does hydrophobic mean?

Back

Hydrophobic means water-fearing; it describes substances that do not mix well with water.

Front

What role do proteins play in the cell membrane?

Back

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

Front

What are carbohydrates' role in the cell membrane?

Back

Carbohydrates serve as recognition sites for cell communication and help cells identify each other.

Front

What is the fluid mosaic model?

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 selective permeability?

Back

Selective permeability is the property of the cell membrane that allows certain substances to pass while blocking others.

Front

What is the significance of cholesterol in the cell membrane?

Back

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

Front

What does it mean for a molecule to be lipid soluble?

Back

Lipid soluble means that a molecule can dissolve in lipids (fats) and pass through the cell membrane easily.