Front

What is Simple Diffusion?

Back

The movement of molecules from an area of high concentration to an area of low concentration without the use of energy.

Front

What is the role of the cell membrane?

Back

The cell membrane controls what substances may enter or leave the cell, helping to maintain homeostasis.

Front

Define Selective Permeability.

Back

The ability of the cell membrane to allow some substances to pass through while preventing others.

Front

What is Osmosis?

Back

The movement of water molecules from an area of high concentration to an area of low concentration through a semi-permeable membrane.

Front

What is Active Transport?

Back

The movement of molecules across a cell membrane from an area of low concentration to an area of high concentration, requiring energy.

Front

What is Facilitated Diffusion?

Back

The process of passive transport of molecules across a cell membrane via specific transmembrane integral proteins.

Front

What is the difference between Active Transport and Passive Transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not require energy.

Front

What are Protein Channels?

Back

Proteins that allow specific ions or molecules to pass through the cell membrane, essential for the transport of large molecules.

Front

What is Homeostasis?

Back

The process by which living organisms regulate their internal environment to maintain stable, constant conditions.

Front

What is the function of the cell wall?

Back

The cell wall provides structure and protection to plant cells, and is not present in animal cells.