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प्रश्न
Which of the following monosaccharides are present as five membered cyclic structure (furanose structure)?
(i) Ribose
(ii) Glucose
(iii) Fructose
(iv) Galactose
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उत्तर
(i) Ribose
(iii) Fructose
Explanation:
Ribose and fructose are presented as five-membered cyclic structure (furanose structures). They have five-membered ring with analogy to the compound foran.
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संबंधित प्रश्न
Glucose or sucrose are soluble in water but cyclohexane or benzene (simple six membered ring compounds) are insoluble in water. Explain.
What are the expected products of hydrolysis of lactose?
What are reducing sugars?
The number of primary and secondary hydroxyl groups in ribose are -
(a) 1, 3
(b) 2, 3
(c) 3, 1
(d) 3, 2
Glucose gives silver mirror test with Tollen’s reagent. It shows the presence of ____________.
The two functional groups present in a typical carbohydrate are:
A carbohydrate that cannot be hydrolysed into simpler units is called ____________.
Reducing sugars reduce ____________.
Glucose can’t be classified as ____________.
Which of the following reagent cannot distinguish between glucose and fructose?
Structure of a disaccharide formed by glucose and fructose is given below. Identify anomeric carbon atoms in monosaccharide units.
Monosaccharides contain carbonyl group hence are classified, as aldose or ketose. The number of carbon atoms present in the monosaccharide molecule are also considered for classification. In which class of monosaccharide will you place fructose?
What are glycosidic linkages? In which type of biomolecules are they present?
Which monosaccharide units are present in starch, cellulose and glucose and which linkages link these units?
Account for the following:
Glucose is a reducing sugar
