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Why does surface area affect diffusion rate?
Explanation: When the cell increases in size, the volume increases faster than the surface area, because volume is cubed where surface area is squared. When there is more volume and less surface area, diffusion takes longer and is less effective.
Is more surface area better for diffusion?
Diffusion and Cell Size The larger a cell is, the greater the surface area available for diffusion.
How do surface area and concentration affect the rate of diffusion?
The greater the difference in concentration, the quicker the rate of diffusion. The higher the temperature, the more kinetic energy the particles will have, so they will move and mix more quickly. The greater the surface area, the faster the rate of diffusion.
Why is surface area important in diffusion and osmosis?
By reducing cell size, cells are greatly increasing the surface area to volume ratio which makes diffusion/osmosis much more effective. If the volume of a cell was large, the ability to quickly change the concentration would decrease.
How is surface area important to the processes of digestion and absorption?
Surface area Chewing breaks the large into the small. The mechanical digestion of food in the mouth involves converting bite-sized pieces of food into smaller particles. This has the effect of increasing the surface area of the food particles and allowing saliva to be thoroughly mixed with them.
How does surface area affect a catalyst?
When solids and liquids react, increasing the surface area of the solid will increase the reaction rate. Catalysts can lower the activation energy and increase the reaction rate without being consumed in the reaction.
How does surface area affect the rate of cooling experiment?
Objects which have a large surface area compared to their volume cool fastest. The surface area of a bin relative to its volume is very small, resulting in a slow cooling rate. Heat transfer occurs through the surface that is in contact with the cooling medium.
Why is increased surface area important in the small intestine?
Microvilli: The cells on the villi are packed full of tiny hairlike structures called microvilli. This helps increase the surface of each individual cell, meaning that each cell can absorb more nutrients.