Cell Membrane: Structure and Function

Front

What are phospholipid heads?

Back

Phospholipid heads are hydrophilic, meaning they are attracted to water.

Front

What is the role of proteins in the cell membrane?

Back

Proteins form channels and pumps in the phospholipid bilayer, facilitating the transport of substances.

Front

What is the hydrophilic portion of the cell membrane?

Back

The hydrophilic portion refers to the phosphate heads of phospholipids that interact with water.

Front

What is an amphipathic molecule?

Back

An amphipathic molecule has a polar head region and a hydrophobic tail region, allowing it to interact with both water and lipids.

Front

What is the structure of the cell membrane?

Back

The cell membrane is primarily composed of a phospholipid bilayer with embedded proteins.

Front

What is the function of the cell membrane?

Back

The cell membrane regulates what enters and exits the cell, providing protection and structural support.

Front

What are the two main components of the cell membrane?

Back

The two main components are phospholipids and proteins.

Front

How do hydrophobic and hydrophilic substances interact with the cell membrane?

Back

Hydrophobic substances pass through the membrane easily, while hydrophilic substances require transport proteins.

Front

What is the fluid mosaic model?

Back

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

Front

What role do carbohydrates play in the cell membrane?

Back

Carbohydrates are involved in cell recognition and signaling, often attached to proteins or lipids.