BIOMOLECULES AND ENZYMES

BIOLOGY

CLASSIFICATION OF CARBOHYDRATES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is a sugar composed of galactose and glucose subunits and has the molecular formula C₁₂H₂₂O₁₁?
A
lactose
B
fructose
C
glucose
D
sucrose
Explanation: 

Detailed explanation-1: -Lactose is a disaccharide sugar synthesized by galactose and glucose subunits and has the molecular formula C12H22O11. Lactose makes up around 2–8% of milk (by mass).

Detailed explanation-2: -Sucrose, a disaccharide, is a sugar composed of glucose and fructose subunits. It is produced naturally in plants and is the main constituent of white sugar. It has the molecular formula C12H22O11.

Detailed explanation-3: -Lactose: The sugar found naturally in milk, lactose is a disaccharide composed of one galactose molecule and one glucose molecule. Lactose is sometimes called “milk sugar.” Maltose: A disaccharide composed of two glucose molecules, maltose is found in molasses and is used in fermentation.

Detailed explanation-4: -Lactose is a disaccharide consisting of the monomers glucose and galactose. It is found naturally in milk.

Detailed explanation-5: -Sucrose is used in foods and soft drinks as a sweetener, in syrup processing, in invert sugar, confectionery, preserves and jams, demulcent, medicinal products, and caramel. Sucrose is also a chemical carrier for detergents, emulsifiers, and other derivatives of saccharose.

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