Cell Transport- Regents

Front

What is osmosis?

Back

Osmosis is the movement of water across a selectively permeable membrane from an area of higher water concentration to an area of lower water concentration.

Front

How does water move into root cells of a plant when the concentration of water is higher in the soil?

Back

Water moves into root cells of a plant by osmosis.

Front

What happens to a cell in a hypotonic solution?

Back

A cell will swell and perhaps burst (lyse) in a hypotonic solution.

Front

What organelles convert glucose into ATP?

Back

Mitochondria are tiny organelles that convert glucose into ATP.

Front

What is the primary function of the cell membrane?

Back

The cell membrane regulates the transport of materials into and out of the cell.

Front

Define facilitated diffusion.

Back

Facilitated diffusion is the process of passive transport of molecules across a cell membrane via specific transmembrane integral proteins.

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy.

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane is a barrier that allows certain substances to pass through while blocking others.

Front

What is the difference between diffusion and osmosis?

Back

Diffusion is the movement of solute particles from an area of higher concentration to an area of lower concentration, while osmosis specifically refers to the movement of water.

Front

What is a hypertonic solution?

Back

A hypertonic solution is one where the concentration of solutes is higher outside the cell than inside, causing the cell to lose water and shrink.