Starch and cellulose both contain glucose unit as monomer,yet they are structurally different.explain
Answers
Answer:
Due to difference in their structural linkage they are structurally different.
Explanation:
starch is formed by C1-C4 alpha glycosidic linkage, whereas cellulose is formed by C1-C4 beta glycosidic linkage...
Starch and cellulose are both polysaccharides that consist of repeating glucose monomers. However, they differ structurally due to the different ways in which the glucose monomers are linked together.
Starch is a glucose polymer that is primarily found in plants as a storage carbohydrate.
It is composed of two main types of glucose polymers: amylose and amylopectin.
Amylose is a linear polymer of glucose units linked by α-1,4-glycosidic bonds,
while amylopectin is a branched polymer of glucose units linked by α-1,4-glycosidic bonds with occasional α-1,6-glycosidic bonds that form branches.
Cellulose, on the other hand, is a glucose polymer that is the primary component of plant cell walls.
It is composed of glucose units linked together by β-1,4-glycosidic bonds, which results in a linear and rigid structure.
Unlike starch, cellulose does not branch, and the β-1,4-glycosidic bonds create a structure that is difficult for enzymes to break down.
The different linkages between glucose monomers in starch and cellulose result in different structures and properties.
Starch is easily digestible by animals and humans because enzymes in their digestive system can break the α-1,4-glycosidic bonds.
In contrast, cellulose is not easily digestible by most animals and humans because their digestive systems lack enzymes that can break the β-1,4-glycosidic bonds.
In summary, the difference in structure between starch and cellulose is due to the different types of glycosidic bonds that link the glucose monomers together.
This difference in structure also leads to different properties and functions of these two polysaccharides in organisms.
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