Cell membrane and Diffusion

Front

What is the hydrophobic region of the cell membrane?

Back

The hydrophobic region of the cell membrane is the part that repels water, typically composed of fatty acid tails of phospholipids.

Front

How does a cell maintain homeostasis?

Back

A cell maintains homeostasis by regulating what enters and leaves the cell, ensuring a stable internal environment.

Front

What is another term for equilibrium?

Back

Homeostasis is another term for equilibrium, referring to a balanced state within a system.

Front

Where is there a low concentration of dye in a solution?

Back

There is a low concentration of dye at the bottom of the cup, where the dye has not yet diffused.

Front

Do all cells have a cell membrane?

Back

Yes, all cells have a cell membrane, which serves as a protective barrier.

Front

What is diffusion?

Back

Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration.

Front

What role does the cell membrane play in a cell?

Back

The cell membrane acts as a protective barrier, regulates the movement of substances, and facilitates communication between cells.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane.

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane allows certain substances to pass while blocking others.

Front

What is the function of cholesterol in the cell membrane?

Back

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