The structure of raffinose,stachyose,and verbascose differ in the number of __________ units attached to a __________.
A) galactose; lactose
B) glucose; sucrose
C) galactose; sucrose
D) glucose; lactose

Question

Quizplus · Accepted Answer

Raffinose, stachyose, and verbascose are all oligosaccharides composed of a glucose molecule, a fructose molecule, and multiple galactose units. The difference is in the number of galactose units attached to the glucose molecule. Raffinose has one galactose unit, stachyose has two, and verbascose has three. The answer choice C correctly identifies the differing units as galactose and the main sugar molecule as sucrose.

The Structure of Raffinose,stachyose,and Verbascose Differ in the Number of __________