Concentration Gradient

Definition

A concentration gradient occurs when there's a difference in the concentration of a substance across a space, like an area or a membrane, leading substances to naturally move from areas of high concentration to low concentration.

Scientific / Technical Definition

A concentration gradient refers to the variable concentration of a solute in a solution between two regions. This gradient is a major driving force in processes like osmosis and diffusion, where substances move along the gradient from a region of higher concentration to one of lower concentration, often across a semi-permeable membrane.

Benefits

• Facilitates nutrient absorption and waste removal in cells
• Essential for processes like osmosis and diffusion which help regulate hydration levels in the body
• Helps in maintaining homeostasis within cells and body systems

Examples

• Osmosis of water in plants
• Diffusion of oxygen and carbon dioxide in lungs
• Absorption of nutrients in the intestines

Additional Information

• effects: Concentration gradients are crucial in cellular functions and help maintain the balance of fluids and electrolytes, influencing cell volume and membrane potential.

Related Terms

• Osmosis

References

• Basic concepts of concentration gradients in biological systems
• The role of concentration gradients in physiological processes