Biology
Active Transport in Cells
Quick fact
Active transport requires energy and is used to move molecules like ions and glucose into or out of cells.
Why this is interesting
Have you ever wondered how your cells can bring in nutrients even when they’re more concentrated outside? It’s not magic — it’s active transport, a process that moves stuff against the odds.
Read the full explanation
Understanding Active Transport in Cells
Imagine your cell as a tiny factory with a gate. Some materials need to be brought in even when they’re more concentrated outside, so the gate has a special pump powered by energy — that’s active transport!
A deeper explanation
Active transport moves substances across a membrane from an area of lower concentration to higher concentration, which goes against the natural flow. This process uses ATP as its energy source and relies on specialized proteins in the cell membrane called pumps. These pumps allow cells to maintain critical internal conditions, such as ion balance, and support functions like nerve signaling and nutrient absorption.