Cell Membrane Structure and Function

Front

What is the primary function of proteins in the cell membrane?

Back

Proteins help move larger materials across the membrane and facilitate various cellular functions.

Front

How do carbohydrates contribute to cell membrane function?

Back

Carbohydrates help cells recognize each other, playing a crucial role in cell communication and signaling.

Front

What is an integral protein?

Back

An integral protein is a type of membrane protein that is permanently attached to the biological membrane, often spanning the membrane.

Front

What are phospholipids and what is their structure?

Back

Phospholipids are molecules composed of a phosphate and glycerol head and two fatty acid chain tails, forming the basic structure of the cell membrane.

Front

What role does the plasma membrane play in cell recognition?

Back

The plasma membrane contains specific proteins and carbohydrates that are responsible for cell-to-cell recognition.

Front

What is the fluid mosaic model of the cell membrane?

Back

The fluid mosaic model describes the cell membrane as a dynamic and flexible structure with various proteins floating in or on the fluid lipid bilayer.

Front

What is the significance of the lipid bilayer in the cell membrane?

Back

The lipid bilayer provides a barrier that separates the interior of the cell from the external environment, allowing selective permeability.

Front

What types of molecules can easily pass through the cell membrane?

Back

Small nonpolar molecules, such as oxygen and carbon dioxide, can easily pass through the cell membrane.

Front

What is the function of cholesterol in the cell membrane?

Back

Cholesterol helps to stabilize the cell membrane's fluidity and integrity, making it less permeable to very small water-soluble molecules.

Front

How do transport proteins function in the cell membrane?

Back

Transport proteins facilitate the movement of substances across the cell membrane, either passively or actively.