5 Questions
What type of bonds are present in starch molecules?
α-1,4 and α-1,6 linkages
What is the main difference between gums and mucilages?
Gums are composed of Ca, K, and Mg salts, while mucilages are sulphuric acid esters
What is the result of hydrolyzing a polysaccharide?
An indefinite number of monosaccharides
What is the type of linkage present in cellulose molecules?
β-1,4 linkages
What is the common name for the polysaccharide found in animals?
Glycogen
Study Notes
Polysaccharides
- Hydrolysis of polysaccharides produces an indefinite number of monosaccharide molecules called glycans.
Biologically Significant Polysaccharides
- Starch: a common polysaccharide of biological significance
- Glycogen (Animal starch): a common polysaccharide of biological significance
- Cellulose: a common polysaccharide of biological significance
- Inulin: a common polysaccharide of biological significance
Structure of Starch and Cellulose
- Starch: glucose units joined by α-1,4 and α-1,6 linkages
- Cellulose: glucose units joined by β-1,4 linkages
Derivatives of Polysaccharides
- Gums: consist of Ca, K, and Mg salts of complex substances called polyuronides
- Properties of Gums: on prolonged boiling with dilute acids, they yield sugar and uronic acids
- Mucilages: sulphuric acid esters
This quiz covers the structure and derivatives of polysaccharides, including starch, glycogen, cellulose, and inulin. It also explores the properties of gums and mucilages.
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