Active Transport
Definition
Active transport is the process by which cells move molecules across a membrane from a lower concentration to a higher concentration using energy.
Scientific / Technical Definition
Active transport is a biochemical process that involves the movement of molecules, such as ions and nutrients, across cell membranes against their concentration gradient. This process requires cellular energy, often in the form of ATP, and involves specific proteins embedded in the cellular membrane.
Benefits
- Facilitates the absorption of essential nutrients in the body.
- Helps maintain proper ion balance and cell function.
- Supports hydration by regulating the movement of water and solutes.
Examples
- The sodium-potassium pump that regulates nerve impulses and muscle contractions.
- Intestinal absorption of glucose and amino acids through nutrient-specific transporters.
Additional Information
- Importance: Active transport is crucial for nutrient uptake, nerve function, and maintaining cellular homeostasis.
Last updated: 10/26/2024