Cell Membrane and Cell Transport Notes Flashcard

Front

What is the main function of the cell membrane?

Back

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

Front

What is passive transport?

Back

A type of transport that does not require energy to move substances across the cell membrane.

Front

What is active transport?

Back

A type of transport that requires energy to move substances against their concentration gradient.

Front

What is diffusion?

Back

The movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is osmosis?

Back

The diffusion of water molecules through a selectively permeable membrane.

Front

What are the levels of organization in the human body from smallest to largest?

Back

Cells, tissue, organs, organ system.

Front

What is the difference between active and passive transport?

Back

Active transport requires energy, while passive transport does not.

Front

What is a selectively permeable membrane?

Back

A membrane that allows certain substances to pass through while blocking others.

Front

What is the role of proteins in the cell membrane?

Back

Proteins help transport substances across the membrane and act as receptors for signaling.

Front

What is the concentration gradient?

Back

The difference in concentration of a substance between two areas.