Pinocytosis

Okay kiddo, have you ever seen a vacuum cleaner? It sucks up small things like dirt, right?

Well, cells can do something similar. They have a special way of bringing in tiny things like nutrients, water, and other materials. This process is called pinocytosis.

At the surface of a cell, there are tiny folds and pockets called "vesicles". When the cell wants to take in something, it surrounds it with one of these vesicles. Think of it like a bubble wrapping around the thing the cell wants to bring inside.

Then, as the vesicle folds on itself, it creates a smaller and smaller bubble, until it's all the way inside the cell. This is like the vacuum cleaner sucking up dirt and putting it into the bag inside it.

So, the cell can use pinocytosis to bring in lots of little things from outside. It's a way for them to stay healthy and grow. Cool, huh?