Cell Membrane

Front

What is the Fluid Mosaic Model?

Back

The Fluid Mosaic Model describes the structure of the cell membrane as a flexible layer made of various components, including phospholipids, cholesterol, and proteins, allowing for movement and interaction.

Front

What are the two parts of a phospholipid?

Back

The two parts of a phospholipid are the Hydrophilic Head and the Hydrophobic Tail.

Front

How do glycoproteins function in the cell membrane?

Back

Glycoproteins contribute to cell recognition, allowing cells to identify and interact with each other.

Front

Which particles can diffuse across the phospholipid bilayer?

Back

Oxygen and carbon dioxide can diffuse across the phospholipid bilayer.

Front

What do the purple regions in a cell membrane diagram typically represent?

Back

The purple regions usually represent proteins embedded in the cell membrane.

Front

What is the primary function of the cell membrane?

Back

The primary function of the cell membrane is to protect the cell and regulate what enters and exits.

Front

What role does cholesterol play in the cell membrane?

Back

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

Front

What is the significance of the hydrophilic and hydrophobic properties of phospholipids?

Back

The hydrophilic heads face outward towards the water, while the hydrophobic tails face inward, creating a bilayer that forms the basic structure of the cell membrane.

Front

What is passive transport?

Back

Passive transport is the movement of substances across the cell membrane without the use of energy, often through diffusion.

Front

What is active transport?

Back

Active transport is the movement of substances against their concentration gradient, requiring energy, usually in the form of ATP.