Is Active Transport From Low To High Jun 2026

| Feature | Passive Transport | Active Transport | | :--- | :--- | :--- | | | High Concentration $\rightarrow$ Low Concentration | Low Concentration $\rightarrow$ High Concentration | | Energy Requirement | No energy required (spontaneous) | Requires Energy (ATP or gradient) | | Proteins Involved | Channel proteins (facilitated diffusion) | Carrier proteins / Pumps | | Analogy | Ball rolling down a hill | Pushing a ball up a hill | | Examples | Diffusion, Osmosis | Sodium-Potassium Pump, Endocytosis |

Without the active transport of ions, your brain could not send signals to your muscles. Active vs. Passive: A Quick Comparison Active Transport Passive Transport Direction Low to High High to Low Energy Needed? Goal Accumulate substances Reach equilibrium Analogy Pushing a ball uphill A ball rolling downhill is active transport from low to high