Have you ever wondered why blood is red? It’s a great question! Blood is made up of many different parts, but one of the most important parts is called red blood cells. These cells have a very special job: they carry oxygen to all the different parts of your body.
Red blood cells pick up oxygen from your lungs and heart. They do this using a special molecule that contains iron. The iron gives the molecule a dark, dull red color. But here’s where it gets interesting!
When a red blood cell collects oxygen, the oxygen changes the shape of the molecule. This change makes the blood look bright red. As the blood travels through your body, delivering oxygen to where it’s needed, it starts to look dull again.
So, the reason blood is red is because of the iron in red blood cells and how they interact with oxygen. It’s a fascinating fact about the human body that certainly isn’t dull!
