Front

What organelle controls what substances may enter or leave cells?

Back

Cell membrane

Front

What do all living things strive to maintain?

Back

Homeostasis

Front

What does it mean when a cell membrane is described as 'selectively permeable'?

Back

It means only certain molecules are allowed in and out of cells.

Front

What is the process called when cells use energy to move materials from low to high concentration?

Back

Active transport

Front

What does 'permeable' mean?

Back

Things can pass through.

Front

What is the primary function of the cell membrane?

Back

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

Front

What is the difference between active transport and passive transport?

Back

Active transport requires energy, while passive transport does not.

Front

What is osmosis?

Back

The movement of water molecules through a selectively permeable membrane.

Front

What is diffusion?

Back

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

Front

What role do vacuoles play in cells?

Back

They store nutrients, waste products, and help maintain turgor pressure.

Tags

NGSS.MS-LS1-2