Gel electrophoresis

Gel electrophoresis is like a super-powered sieve for tiny things called molecules. These molecules are so small you can't see them, even with a regular microscope! Think of them like LEGO bricks that make up everything in your body.

This science trick helps scientists sort these tiny bricks by how big or small they are. It's a bit like lining up your toy cars from the smallest to the biggest. The gel is like a maze, and the electricity helps push the molecules through it.

This amazing sorting trick was invented a long time ago, in the 1930s! Scientists like Arne Tiselius were trying to figure out what different parts of blood were made of. They needed a way to separate them.

So, they came up with this idea of using a gel and electricity. It was a big deal because it helped them understand what makes living things tick. Now, scientists all over the world use it to learn about DNA, proteins, and more!

Gel electrophoresis is like a detective tool for scientists! It helps them solve mysteries about life. For example, it can help doctors figure out if someone is sick by looking at their DNA.

It's also used to catch bad guys by matching DNA from a crime scene to a suspect. Plus, it helps scientists study how plants and animals grow and change. It's a key step in understanding diseases and making new medicines.

Imagine a jelly-like block with tiny holes, like a sponge. That's the gel! Scientists put their tiny molecules into little wells at one end.

Then, they turn on the electricity. The electricity has a positive and a negative side. Most molecules have a charge, like a tiny magnet.

The electricity pulls these molecules through the gel maze. Smaller molecules can zip through the holes faster, while bigger molecules get stuck more often. So, they end up separated by size!