Diffusion presentation by derek et al.pptx

comprehensive presentation on movement of substances

1. Diffusion By: Derek, Josiah, Ayongo, Kekeli, Rejoice

2. What is diffusion? Diffusion is the movement of particles from a place of higher concentration to a place of lower concentration.

3. Types of Diffusion Simple Diffusion: A process by which a substance moves through a semipermeable membrane without any help from transport proteins. Facilitated Diffusion: A passive movement of molecules across the cell membrane from a place of higher concentration to a place of lower concentration by means of a carrier molecule. Dialysis : It is the diffusion of solutes across a selectively permeable membrane .

4. Diffusion in Plants . Diffusion is a very important process for photosynthesis where carbon dioxide from the stomata diffuses into the leaves and finally into the cells.

5. Factors affecting diffusion. Temperature. Area of Interaction. Size of the Particle. The steepness of the concentration gradient.

6. Causes of Diffusion. Diffusion is a natural and physical process, which happens on its own, without stirring or shaking the solutions. Liquid and gases undergo diffusion as the molecules are able to move randomly. The molecules collide with each other and change their direction.

7. Significance of Diffusion. During the process of respiration, this process helps in diffusing the carbon dioxide gas out through the cell membrane into the blood. Diffusion also occurs in plant cells. In all green plants, water present in the soil diffuses into plants through their root hair cells. The movement of ions across the neurons that generates electrical charge is due to diffusion

8. Examples of diffusion.

9. References https://byjus.com/biology/diffusion/ https://www.google.com/url?sa=i&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FDiffusion&psig=AOvVaw0hgbaf7oGzWObVKCGIjVzG&ust=1697053923277000&source=images&cd=vfe&opi=89978449&ved=0CBEQjRxqFwoTCPCr_c-g7IEDFQAAAAAdAAAAABAd https://www.google.com/imgres?imgurl=https%3A%2F%2Fwww.thoughtco.com%2Fthmb%2FTqVJtnnpcSaW38uJldPSqfi9ncM%3D%2F1500x0%2Ffilters%3Ano_upscale()%3Amax_bytes(150000)%3Astrip_icc()%2Fdiffusion-in-water-530463502-5766aaec3df78ca6e4a98185.jpg&tbnid=gF6xobmNLQ6kfM&vet=12ahUKEwiura7ToOyBAxXTsEwKHQacA10QMygHegQIARB8..i&imgrefurl=https%3A%2F%2Fwww.thoughtco.com%2Fdiffusion-definition-and-examples-609189&docid=9iHtQGIv_veGuM&w=1500&h=938&q=diffusion&ved=2ahUKEwiura7ToOyBAxXTsEwKHQacA10QMygHegQIARB8