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Which two molecules below do NOT contain a 1,4 glycosidic linkage?
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9. Carbohydrates
Glycosidic Bond
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What type of bond links the monomers of a polysaccharide?
A
Peptide bond
B
Glycosidic bond
C
Phosphodiester bond
D
Disulfide bond
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Understand the structure of polysaccharides: Polysaccharides are long chains of monosaccharides (simple sugars) linked together through specific types of bonds.
Identify the type of bond that connects monosaccharides: Monosaccharides are linked by covalent bonds formed during a dehydration (condensation) reaction, where a water molecule is removed.
Learn the name of the bond: The covalent bond formed between the hydroxyl groups (-OH) of two monosaccharides is called a glycosidic bond.
Compare with other bond types: Peptide bonds link amino acids in proteins, phosphodiester bonds connect nucleotides in nucleic acids, and disulfide bonds stabilize protein structures. None of these are involved in polysaccharides.
Conclude that the correct bond type linking the monomers of a polysaccharide is the glycosidic bond, which is specific to carbohydrate molecules.
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