What is cellulose?

Cellulose is like the strong thread that holds plants together, just like string holds a basket.

Imagine you have a bunch of straws, long, hollow tubes. Now picture those straws being linked hand-in-hand in a long line, forming a rope. That’s kind of what cellulose looks like inside plants. It's made up of tiny, repeating units called sugar molecules, all joined together to make a very tough and flexible thread.

Cellulose is found in the walls of plant cells, like the skin on an apple or the cover of a book. These walls help plants stand tall and stay strong, even when they're hit by wind or rain. It's so strong that cows and horses need special tools (like enzymes) to break it down and turn it into food, kind of like how you need scissors to cut through thick string.

Even though we can't see it, cellulose is all around us, in paper, in clothes made from cotton, and even in the crunchy parts of your favorite veggies. It's the reason why plants don’t just squish into nothing when you bite them!