Which of the following monosaccharides combine to make the disaccharide sucrose?
i.Glucose
ii.Fructose
iii.Ribose
iv.Galactose
A)i and ii
B)i and iii
C)i and iv
D)ii and iii
E)ii and iv

Question

Quizplus · Accepted Answer

Sucrose is made up of one glucose molecule and one fructose molecule. Therefore, only choice A) i and ii are the correct monosaccharides that combine to make sucrose. Choice B) i and iii is incorrect because ribose is not a component of sucrose. Choice C) i and iv is incorrect because galactose is not a component of sucrose. Choice D) ii and iii is incorrect because glucose is also needed to make sucrose, not just fructose. Choice E) ii and iv is incorrect because galactose is not a component of sucrose, only glucose and fructose.

Which of the Following Monosaccharides Combine to Make the Disaccharide