Two Major Types Of Active Transport _hot_ (2026 Edition)

| 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. |

The potential energy stored in the concentration gradient of another molecule (typically Na⁺ or H⁺). This gradient was originally created by a primary active transport pump. 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). | Subtype | Direction of Coupled Movement |

Adenosine Triphosphate (ATP). The pump itself is an ATPase enzyme that breaks ATP into ADP + Pi, releasing energy. | Sodium-Calcium exchanger (NCX) in cardiac muscle