Bio - Chemistry Question

Question

Dear experts,

I would like to receive help in distinguishing the monosaccharides so i can answer this question:

Which of these substances is a monosaccharide?

0 Maltose

0 Amylose

0 Sucrose

0 Galactose

0 Lactose

Answer 1

Monosaccharide means one (mono) sugar moiety. So the answer would be GALACTOSE.

Maltose -a disaccharide composed of 2 glucose units

Amylose - a polysaccharide composed of many alpha glucose units

Sucrose - a disaccharide composed of glucose + fructose

Galactose - a monosaccharide

Lactose - a disaccharide composed of galactose + glucose