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प्रश्न
The linkage present in Lactose is ______.
विकल्प
α, β - 1, 2 - glycosidic linkage
α - 1, 4 - glycosidic linkage
β - 1, 4 - glycosidic linkage
α - 1, 4 - glycosidic linkage
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उत्तर
The linkage present in Lactose is β - 1, 4 - glycosidic linkage.
Explanation:
Lactose is a disaccharide composed of glucose and galactose.
These two monosaccharides are joined by a β-1,4-glycosidic bond, where the hydroxyl group on carbon 1 of galactose (in the β-configuration) is linked to the hydroxyl group on carbon 4 of glucose.
This type of linkage is hydrolysed by the enzyme lactase in the human body during digestion.
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संबंधित प्रश्न
\[\ce{CH2OH-CO-(CHOH)4-CH2OH}\] is an example of ______.
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Hydrolysis of sucrose is called inversion.
Give two evidences for presence of formyl group in glucose.
Draw a neat diagram for the following:
Haworth formula of glucopyranose.
Draw a neat diagram for the following:
Haworth formula of maltose
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glucose into glucoxime
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acetic anhydride
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Identify the given structure 'P' and 'Q'.
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Match the columns and select the correct option.
| Column I | Column II | ||
| i. | Starch | a. | Animal storage molecule |
| ii. | Cellulose | b. | Plant storage molecule |
| iii. | Glycogen | c. | Heparin |
| iv. | Heteropolysaccharide | d. | Plant cell wall component |
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One mole of a carbohydrate on hydrolysis gives one mole of glucose and one mole of galactose. Identify the carbohydrate.
Which of the following monosaccharide is a ketohexose?
The general formula for polysaccharide is ____________.
Stachyose is ____________.
\[\ce{CH3 - CH2 - CH2 - Br ->[Na][dry ether] A ->[Cl2] B}\]
Identify the product B in the above reaction.
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Which one of the following carbohydrates is insoluble in water?
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Identify the number of oxygen atoms present in saccharic acid?
Which among the following is a product of hydrolysis of one mole raffinose?
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Which one given below is a non-reducing sugar?
\[\ce{Glucose ->[(HCN)] Product ->[(hydrolysis)] Product ->[(HI + Heat)] A}\], the compound A is:
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Classify the following into monosaccharides, oligosaccharides and polysaccharides.
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Classify the following into monosaccharides, oligosaccharides and polysaccharides.
Sucrose
The molecule of glucose is also called ______.
Corn is immersed in boiling water. It is then cooled, and the solution becomes sweet. It is due to ______.
Why carbohydrates are generally optically active.
Why carbohydrates are generally optically active?
Assign D/L configuration to the following monosaccharides:
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Why carbohydrates are generally optically active.
\[\ce{CH2OH - CO - (CHOH)4 - CH2 OH}\] is an example of ______.
\[\ce{CH2OH-CO-(CHOH)4-CH2OH}\] is an example of ______.
\[\ce{CH2OH - CO - (CHOH)4 - CH2OH}\] is an example of ______.
Given below are two statements.
Statement I - Lactose on hydrolysis converts into glucose and galactose.
Statement II - Galactose also plays same role as glucose in respiration.
In light of the above statements, select the correct option given below.
What are the number of chiral carbon atoms and the number of formyl groups, respectively, present in ribose?
