HUMAN NUTRITION

NUTRITION

CARBOHYDRATES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which carbohydrate is made up of two glucose molecules?
A
Lactose
B
Maltose
C
Sucrose
D
Galactose
Explanation: 

Detailed explanation-1: -disaccharides. Maltose, a product of the breakdown of starches during digestion, consists of two molecules of glucose connected via an -linkage.

Detailed explanation-2: -Maltose consists of two molecules of glucose that are linked by an -(1, 4’) glycosidic bond. Maltose results from the enzymatic hydrolysis of amylose, a homopolysaccharide (Section 28.9), by the enzyme amylase. Maltose is converted to two molecules of glucose by the enzyme maltase, which hydrolyzes the glycosidic bond.

Detailed explanation-3: -Since there are two units connected, maltose is referred to as a disaccharide: ‘di’ meaning two and saccharide is another name for a simple carbohydrate or sugar (such as glucose). So, it is a carbohydrate with two sugar units.

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