Passive and Active Transport

Front

What is diffusion?

Back

Diffusion is the process when molecules move from a high concentration to a low concentration.

Front

Which type of transport requires an input of energy?

Back

Active Transport requires an input of energy.

Front

What is Passive Transport?

Back

Passive Transport is the movement of particles from high to low concentration without the use of energy.

Front

What does 'high concentration area' mean?

Back

A high concentration area means that particles are tightly packed together.

Front

What is an example of diffusion?

Back

An example of diffusion is when particles of dye spread evenly throughout water.

Front

What is osmosis?

Back

Osmosis is the movement of water molecules through a semi-permeable membrane from a region of low solute concentration to a region of high solute concentration.

Front

What is the main difference between active and passive transport?

Back

The main difference is that active transport requires energy to move substances against their concentration gradient, while passive transport does not.

Front

What is a concentration gradient?

Back

A concentration gradient is the difference in the concentration of a substance between two areas.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses transport proteins to help move substances across the cell membrane.

Front

What role do cell membranes play in transport?

Back

Cell membranes control the movement of substances in and out of the cell, allowing for selective permeability.