Cell transport

Front

What is a hypertonic solution?

Back

A hypertonic solution has a higher solute concentration outside the cell than inside, causing the cell to lose water and shrink.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses protein channels to help molecules move from an area of high concentration to an area of low concentration.

Front

What is an isotonic solution?

Back

An isotonic solution has the same solute concentration inside and outside the cell, resulting in no net movement of water.

Front

What is active transport?

Back

Active transport is the movement of molecules against the concentration gradient, requiring energy (ATP) to move substances from low to high concentration.

Front

What is passive transport?

Back

Passive transport is the movement of molecules along the concentration gradient, from high to low concentration, without the use of energy.

Front

What happens to a cell in a hypertonic solution?

Back

The cell shrinks as water moves out of it to balance the solute concentration.

Front

What happens to a cell in an isotonic solution?

Back

The cell remains the same size as water moves in and out at equal rates.

Front

What happens to a cell in a hypotonic solution?

Back

The cell swells as water moves into it, potentially leading to bursting.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is the role of protein channels in facilitated diffusion?

Back

Protein channels provide a pathway for specific molecules to pass through the cell membrane, facilitating their movement down the concentration gradient.