Front

Which biomolecule makes up MOST of the cell membrane?

Back

Phospholipids

Front

What happens during osmosis?

Back

Movement of water molecules from an area of high water concentration to an area of low water concentration.

Front

The main difference between passive and active transport is that one requires ______, while the other does not.

Back

Energy.

Front

How does the cell membrane help maintain homeostasis in each cell?

Back

The cell membrane controls the movement of substances in and out of the cell.

Front

What is passive transport?

Back

The movement of molecules across the cell membrane without the use of energy.

Front

What is active transport?

Back

The movement of molecules across the cell membrane using energy, typically against a concentration gradient.

Front

Define diffusion.

Back

The process by which molecules spread from areas of high concentration to areas of low concentration.

Front

What role do proteins play in cell transport?

Back

Proteins can act as channels or carriers to facilitate the movement of substances across the cell membrane.

Front

What is the function of the cell membrane?

Back

To protect the cell and control the movement of substances in and out.

Front

What is a concentration gradient?

Back

A difference in the concentration of a substance across a space.