Kinds Of Active Transport _top_ Official

Active transport is a cellular process used to move molecules across a cell membrane against their concentration gradient (from an area of low concentration to an area of high concentration). Because this movement opposes the natural flow of diffusion, it requires energy, usually in the form of Adenosine Triphosphate (ATP).

| Type | Energy Source | Direction | Sub-types | Key Examples | | :--- | :--- | :--- | :--- | :--- | | | Direct ATP hydrolysis | Against gradient | Pumps | Na+/K+ Pump, Ca2+ Pump | | Secondary Active | Ion gradient (stored energy) | Against gradient | Symport, Antiport | Na+/Glucose (Symport), Na+/Ca2+ (Antiport) | | Bulk Transport | ATP for vesicle formation | Large materials | Exocytosis, Endocytosis | Secretion of hormones, Phagocytosis | kinds of active transport

: This involves the movement of large particles or large quantities of smaller molecules using vesicles. It is divided into: Active transport is a cellular process used to

In biology, is the process by which cells move molecules across their membrane against their concentration gradient—from an area of low concentration to an area of high concentration. Because this is an "uphill" movement that defies natural diffusion, it requires energy, typically in the form of ATP (adenosine triphosphate). It is divided into: In biology, is the