IB Cell Transport #2

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes compared to another solution, causing cells to swell as water enters.

Front

What happens to red blood cells in a hypotonic solution?

Back

Red blood cells will swell and may burst due to the influx of water.

Front

What is a concentration gradient?

Back

The difference in the concentration of a substance between two areas, which drives diffusion.

Front

What is a hypertonic solution?

Back

A hypertonic solution has a higher concentration of solutes compared to another solution, causing cells to shrink as water exits.

Front

What is passive transport?

Back

The movement of substances across a cell membrane without the use of energy, following the concentration gradient.

Front

What is facilitated diffusion?

Back

A type of passive transport that uses protein channels to help move substances across the cell membrane.

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is the difference between simple diffusion and facilitated diffusion?

Back

Simple diffusion occurs directly through the membrane, while facilitated diffusion requires specific transport proteins.

Front

What is active transport?

Back

The movement of substances against their concentration gradient, requiring energy (ATP) to occur.

Front

What role do protein channels play in cell transport?

Back

Protein channels facilitate the movement of specific molecules across the cell membrane, especially in facilitated diffusion.