Cell transport

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy.

Front

Why is passive transport called 'passive'?

Back

It is called 'passive' because it occurs without the expenditure of energy.

Front

What does hypertonic mean in relation to a cell?

Back

A solution is considered hypertonic to the cell if it has a higher amount of solute compared to the cell.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane.

Front

What does isotonic mean?

Back

A solution is isotonic when the concentration of solutes is the same on both sides of a membrane.

Front

What is simple diffusion?

Back

Simple diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration without the need for energy.

Front

What is facilitated diffusion?

Back

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

Front

What is the difference between hypertonic and hypotonic solutions?

Back

Hypertonic solutions have a higher concentration of solutes compared to the cell, while hypotonic solutions have a lower concentration of solutes compared to the cell.

Front

What role do cell membranes play in transport?

Back

Cell membranes regulate the movement of substances in and out of the cell, maintaining homeostasis.

Front

What is active transport?

Back

Active transport is the movement of substances against their concentration gradient, requiring energy.