Examples of osmosis and diffusion

You can consider osmosis to be a special case of diffusion in which diffusion occurs across a semipermeable membrane and only the water or other solvent moves. Diffusion and osmosis are both passive transport processes that act to equalize the concentration of a solution.

The diffusion of chemicals and gases in and out of cells is an essential activity in human organs. Diffusion of oxygen and carbon dioxide gas occurs in the lungs. Diffusion of water, salts, and waste products occurs in the kidneys. Diffusion of calcium from food into cells occurs in the intestines.

Examples of diffusion in living organisms

Oxygen and carbon dioxide, dissolved in water, are exchanged by diffusion in the lungs: oxygen moves down a concentration gradient from the air in the alveoli to the blood. carbon dioxide moves down a concentration gradient from the blood to the air in the alveoli.

Transmission of water into cells is not an example of diffusion.

The examples of diffusion in plants are:

The uptake of water and nutrients from the soil by the roots. The distribution of nutrients and water to all the parts of the plant. Diffusion of Carbon Dioxide into the leaf of the plants during photosynthesis. Release of oxygen out of the stomata of the leaf.

The smell of perfumes/Incense Sticks. Opening the Soda/Cold Drinks bottle and the CO2 diffuses in the air. Dipping the tea bags in hot water will diffuse the tea in hot water. Small dust particles or smoke diffuse into the air and cause air pollution.

Examples of diffusion in animal cells

When blood reaches the cell the molecules of glucose and oxygen diffuses out of the blood into the cell. Gases exchange at the alveoli in which oxygen from air to blood and carbon dioxide diffuse out from blood to air.