wait... hold up... no... maybe... never.
The answer is <span>Disaccharides are different in structure because they are not made up of the same monosaccharides, and this gives them different properties.
Both sucrose and lactose are disaccharides, however, they are made up different monosaccharides:
Disaccharide = monosaccharide + monosaccharide
Sucrose = glucose + fructose
Lactose = glucose + </span>galactose
Since they have different structures, their characteristics and behaviour in chemical reactions must differ, too.
The main form is carbon dioxide and methane
