Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryBiomolecules1 Mark
Question
Starch is composed of two polysaccharides namely:
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Answer
Amylose and amylopectin.
Explanation:
Amylose and amylopectin are polysaccharides of starch. Starches are glucose polymers in which glucopyranose units are bonded by α-linkages.
It is made up of a mixture of amylose (15%-20%) and amylopectin (80%-85%).
Amylose consists of a linear chain of several hundred glucose molecules and Amylopectin is a branched molecule made of several thousand glucose units. Starches are insoluble in water.
They can be digested by hydrolysis, catalyzed by enzymes called amylases, which can break the α-linkages (glycosidic bonds).
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