Question

This disaccharide is also known as malt sugar since it is formed from the breakdown of starch andis a key ingredient in beer:
A. lactose
B. maltose
C. cellobiose
D. sucrose

Answer 1

The answer is B, maltose.

Maltose is a disaccharide, composed of two monosaccharide. It can be broken down by amylase, a enzyme, from starch, a polysaccharide. Maltose is also important in beer, even though it is decomposed into ethanol by yeast.

Maltose is only only disaccharide that matches the description so the answer is B.