Question

The scientific name of cellobiose is
A. $4-O-\beta-D-$ glucopyranosyl-D-glucose
B. $8-O-\beta-D-$ glucopyranosyl-D-glucose
C. $N{H_2}S{O_4}-\beta-D-$ reductase
D. $6N{H_3}P{O_4}-\alpha-D-$ reductase

Answer 1

Hint: Cellobiose is a disaccharide that is formed when the first carbon of a monosaccharide and the fourth carbon of another monosaccharide condense to release water and forms a glycosidic bond.

Complete answer: Cellobiose is also known as \[GLCB1{\text{}}-{\text{}}4GLCB\]. This compound belongs to a group of organic compounds known as o-glycosyl compounds. In this compound, a sugar molecule is bonded through one carbon to another group via a glycosidic bond. It commonly exists in all eukaryotes ranging from yeast to humans. It is a disaccharide. It is a type of reducing sugar i.e. it can be enzymatically hydrolyzed to a monosaccharide. It is derived by the condensation of two $\beta-$ glucose molecules forming \[\beta(1\to 4)\] glycosidic bonds. It has eight free OH groups. It is made up of $\beta-D$ glucopyranosyl and glucopyranose molecules. It has an acetal and hemiacetal linkage that gives rise to strong intramolecular and intermolecular bonds. Its scientific name is $4-\beta-D-$ glucopyranosyl-D-glucose. It is commonly used as a sweetening agent and is formed as a fermentable intermediate in brewing. It is commonly used as an indicator of Crohn's disease and malabsorption syndrome.
Hence, the correct answer is option A.

Note: Cellulose is a white crystalline disaccharide that performs a structural role and is present in several organisms. It is formed when cellobiose partially breaks down by the enzyme cellulase. It is similar to cellulose in having glucose constituents. Its chemical formula is ${C_{12}}{H_{22}}{O_{11}}$.