Cellulose is a natural polymer made up of long chains of glucose molecules. It is the main component of the cell walls in plants, giving them structure and strength. Humans cannot digest cellulose, but it plays an important role in our diet as dietary fiber, helping to keep our digestive system healthy. In addition to its role in plants, cellulose is used in various industries. It is found in products like paper, textiles, and even some food items. Scientists also explore ways to convert cellulose into biofuels, making it a valuable resource for sustainable energy solutions.