Advertisements
Advertisements
प्रश्न
Answer the following question.
Write the products obtained after the hydrolysis of lactose.
Advertisements
उत्तर
Lactose is composed of β-D galactose and β-D glucose. Thus on hydrolysis, it gives β-D galactose and β-D glucose.
\[\ce{\underset{\text{Lactose}}{C12H22O11}+\underset{\text{Water}}{H2O}->\underset{\text{D-Glucose}}{C6H12O6}+\underset{\text{D-Galactose}}{C6H12O6}}\]
संबंधित प्रश्न
What do you understand by the term glycosidic linkage?
What happens when D-glucose is treated with the following reagent?
HNO3
The sugar that is characteristic of milk is ____________.
Which one is a disaccharide?
The commonest disaccharide has the molecular formula:
In disaccharides, if the reducing groups of monosaccharides i.e. aldehydic or ketonic groups are bonded, these are non-reducing sugars. Which of the following disaccharide is a non-reducing sugar?
Match the following enzyms given in Column I with the reactions they catalyse given in Column II.
| Column I (Enzymes) | Column II (Reactions) |
| (i) Invertase | (a) Decomposition of urea into NH3 and CO2 |
| (ii) Maltase | (b) Conversion of glucose into ethyl alcohol |
| (iii) Pepsin | (c) Hydrolysis of maltose into glucose |
| (iv) Urease | (d) Hydrolysis of cane sugar |
| (v) Zymase | (e) Hydrolysis of proteins into peptides |
Maltose is made of
Lactose on hydrolysis yields
Which disaccharide is present in milk?
