Consider starch and fiber, both polysaccharides, both derived from plants, both composed of hundreds to thousands of monosaccharides joined together, but they're joined together differently, and that changes the effect  they have on your body.
Considera el almidón y la fibra, ambos polisacáridos, ambos derivados de plantas, ambos compuestas por cientos de miles  de monosacáridos unidos entre sí, pero unidos entre sí de forma diferente, lo que cambia el efecto  que tienen en el cuerpo.