Types Of Active Transport ❲2024❳

Primary active transport is the most direct form of transport. In this process, the cell uses chemical energy (ATP) directly to move substances across the membrane.

| Feature | Primary Active Transport | Secondary Active Transport | | :--- | :--- | :--- | | | Direct hydrolysis of ATP. | Uses energy stored in an electrochemical gradient (created by primary transport). | | Mechanism | The carrier protein acts as an enzyme (ATPase). | The carrier protein couples the flow of two different molecules. | | Direction | Moves molecules against their gradient. | Moves one molecule down its gradient to drive another against its gradient. | | Common Example | Sodium-Potassium Pump. | Glucose absorption (Symport) or Calcium-Sodium exchange (Antiport). | types of active transport

Secondary active transport is slightly more complex. It does not use ATP directly to move the desired substance. Instead, it harnesses the energy stored in an electrochemical gradient created by primary active transport. Primary active transport is the most direct form

Cellular active transport is broadly divided into two major categories based on the immediate source of energy driving the movement. 1. Primary Active Transport | Uses energy stored in an electrochemical gradient