What are the three types of diffusion?

Answer 1

A great example is perfume sprayed in a room. A person standing 15 ft away wont smell it right away, but after a minute or two (it has to diffuse through the air) the person will smell it. Also, if you drop a sugar cube in a glass of water, that basically gives you a perfect visual aid of diffusion. These are the 5 types that I know of:

1. Simple diffusion- occurs when molecules moves from a higher concentration to a lower concentration through a semi-permeable membrane without the assistance of proteins or use of energy. This is a form of Passive Transport.

2. Facilitated diffusion-occurs when molecules moves from a higher concentration to a lower concentration through a semi-permeable membrane with the assistance of proteins or but not the use of energy. This is a form of Passive Transport.

3. Active transport-occurs when molecules moves from a lower concentration to a higher concentration through a semi-permeable membrane with the assistance of proteins and the use of ATP energy.

4. Endocytosis- large amounts of molecules move toward the inside of a cell. This is a form of Active Transport.

5. Exocytosis- large amounts of molecules move toward the outside of a cell. This is a form of Active Transport.

Answer 2

In Biology there are three types of diffusion. There are simple, channel, and facilitated diffusion.

Answer 3

Respiration, Photosynthesis, Excretion.

Answer 4

Osmosis ,facilitated diffusion passive and active