Sucrose and lactose are two carbohydrates that have the same molecular formula (C12H22O11). Which of the following describes why sucrose and lactose have different properties?
Answer
They are made of different combinations of monosaccharides.
They are made up of different monomers.
They differ in how atoms are bonded to their hexagonal rings.
They differ in their arrangement of glucose.

Respuesta :

they are made of different combinations of monosaccharides
Option a is correct
They are made of different combinations of monosaccharides. 
Because sucrose is made by the combination of gulocuse and fructose and lactose is made by combination of glucose and galactose .so they are made of different combination of monosaccaride.