Diffusion Definition: Diffusion is the process by which particles spread from areas of high concentration to areas of low concentration. Types of Diffusion: Simple Diffusion: Involves the movement of small, non-polar molecules across the cell membrane. Facilitated Diffusion: Requires the help of transport proteins to move larger or polar molecules across the membrane. Osmosis: Specifically refers to the diffusion of water molecules across a selectively permeable membrane. Factors affecting Diffusion: Concentration Gradient: The greater the difference in concentration between two areas, the faster the rate of diffusion. Temperature: Higher temperatures generally lead to faster diffusion rates as particles have more energy. Surface Area: Larger surface areas allow for more particles to come into contact and diffuse. Particle Size: Smaller particles tend to diffuse more quickly than larger ones. Importance of Diffusion: Essential for processes such as gas exchange in the lungs, nutrient absorption in the intestines, and waste removal in the kidneys. Crucial for maintaining homeostasis within living organisms.

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What is diffusion?

Diffusion

Definition:

Diffusion is the process by which particles spread from areas of high concentration to areas of low concentration.

Types of Diffusion:

Simple Diffusion: Involves the movement of small, non-polar molecules across the cell membrane.
Facilitated Diffusion: Requires the help of transport proteins to move larger or polar molecules across the membrane.
Osmosis: Specifically refers to the diffusion of water molecules across a selectively permeable membrane.

Factors affecting Diffusion:

Concentration Gradient: The greater the difference in concentration between two areas, the faster the rate of diffusion.
Temperature: Higher temperatures generally lead to faster diffusion rates as particles have more energy.
Surface Area: Larger surface areas allow for more particles to come into contact and diffuse.
Particle Size: Smaller particles tend to diffuse more quickly than larger ones.

Importance of Diffusion:

Essential for processes such as gas exchange in the lungs, nutrient absorption in the intestines, and waste removal in the kidneys.
Crucial for maintaining homeostasis within living organisms.

Answered by Notes Wala · View profile

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