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NEET CHEMISTRYBiomoleculesEasy

Question

A non-reducing sugar among the following is:

A

Lactose

B

Glucose

C

Sucrose

D

Maltose

Step-by-Step Solution

Carbohydrates that can reduce Tollens' reagent or Fehling's solution are called reducing sugars. All monosaccharides (like glucose) are reducing sugars. In disaccharides, if the reducing groups (aldehydic or ketonic groups at the anomeric carbons) are free, the sugar is reducing (e.g., maltose and lactose). However, in sucrose, the two monosaccharide units (α\alpha-D-glucose and β\beta-D-fructose) are linked through their respective anomeric carbons (C1 of glucose and C2 of fructose). Since both reducing groups are involved in the glycosidic bond formation and are not free, sucrose is a non-reducing sugar.

Exam Context & Concepts Covered

This question aligns with the NEET CHEMISTRY syllabus, specifically targeting concepts from Biomolecules. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

CHEMISTRYBiomoleculesnonreducingfollowing

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$\alpha$-D-glucose and $\beta$-D-glucose are:

A.Epimers
B.Anomers
C.Functional isomers
D.Chain isomers
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A.L-sugar component
B.chiral bases
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Which of the following hormones is produced under the condition of stress which stimulates glycogenolysis in the liver of human beings?

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C.Adrenaline
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Which one of the following sets of monosaccharides forms sucrose?

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C.$\beta$-D-glucopyranose and $\alpha$-D-fructofuranose
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The incorrect statement about the denaturation of proteins is:

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Which of the following is not a correct statement?

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