BIOMOLECULES AND ENZYMES

BIOLOGY

CARBOHYDRATES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of these is NOT a disaccharide?
A
Sucrose
B
Lactose
C
Maltose
D
Galactose
Explanation: 

Detailed explanation-1: -So, the correct answer is option (D) starch.

Detailed explanation-2: -Galactose is a monosaccharide (C6H12O6).

Detailed explanation-3: -Dextrose (glucose) is a monosaccharide. It does not represent a disaccharide.

Detailed explanation-4: -Galactose is more commonly found in the disaccharide, lactose or milk sugar. It is found as the monosaccharide in peas. Galactose is classified as a monosaccharide, an aldose, a hexose, and is a reducing sugar.

Detailed explanation-5: -Galactose is a monosaccharide. When combined with glucose (another monosaccharide) through a condensation reaction, the result is a disaccharide called lactose. The hydrolysis of lactose to glucose and galactose is catalyzed by the enzymes lactase and -galactosidase.

There is 1 question to complete.