Two Major Types Of Active Transport (REAL — 2027)

Active transport is the movement of molecules or ions across a cell membrane against their concentration gradient (from low to high concentration). This process requires energy (usually ATP) because it is moving substances away from equilibrium.

| Subtype | Direction of Coupled Movement | Example | | :--- | :--- | :--- | | | Both molecules move in the same direction across the membrane. | Sodium-glucose linked transporter (SGLT) in kidney/intestine. | | Antiport (Exchange) | The two molecules move in opposite directions across the membrane. | Sodium-Calcium exchanger (NCX) in cardiac muscle. | two major types of active transport

The two major types are and Secondary Active Transport . They are distinguished by how they obtain the energy needed to move the solute. Type 1: Primary Active Transport Definition: The transport of molecules against their concentration gradient using energy directly from the hydrolysis of ATP (or another energy source like light). Active transport is the movement of molecules or