Kinds Of Active Transport Review

| 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 |

There are three main types of endocytosis: kinds of active transport

Secondary transport always moves :

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). | Type | Energy Source | Direction |

Active transport is a fundamental biological process where cells move molecules or ions against their concentration gradient—from an area of low concentration to one of high concentration. Because this movement is like "pushing water uphill," it requires an input of cellular energy, typically in the form of . Because this movement is like "pushing water uphill,"

Additionally, (endo/exocytosis) is an energy-dependent mechanism for moving large particles. Together, these systems allow cells to maintain internal environments completely different from their surroundings—a key property of life.