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Ch.13 Carbohydrates
Timberlake - Chemistry: An Introduction to General, Organic, and Biological Chemistry 14th Edition
Timberlake14th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoTimberlake 14th EditionCh.13 CarbohydratesProblema 60a
Capitolo 13, Problema 60a

 What are the disaccharides and polysaccharides present in each of the following?
a. <IMAGE>

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1
Identify the disaccharides and polysaccharides by analyzing the structure of the carbohydrate in the provided image. Look for glycosidic bonds, which are the linkages between monosaccharide units.
Recall that disaccharides are composed of two monosaccharide units joined by a glycosidic bond. Common examples include sucrose, lactose, and maltose. Match the structure in the image to one of these disaccharides.
Polysaccharides are long chains of monosaccharide units linked by glycosidic bonds. Examples include starch, glycogen, and cellulose. Determine if the structure in the image represents a polysaccharide by identifying repeating units and the type of glycosidic linkage (e.g., α-1,4 or β-1,4).
For each structure in the image, classify it as either a disaccharide or a polysaccharide based on the number of monosaccharide units and the type of glycosidic bond present.
Summarize the findings by naming the specific disaccharides and polysaccharides identified in the image, ensuring to note their structural features and biological significance.

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Disaccharides

Disaccharides are carbohydrates formed by the combination of two monosaccharide molecules through a glycosidic bond. Common examples include sucrose (glucose + fructose) and lactose (glucose + galactose). They serve as important energy sources and are found in various foods, playing a crucial role in nutrition.
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3:39
Types of Disaccharides Concept 1

Polysaccharides

Polysaccharides are complex carbohydrates composed of long chains of monosaccharide units linked together. They can be classified into storage polysaccharides, like starch and glycogen, and structural polysaccharides, such as cellulose. These molecules are vital for energy storage and providing structural support in plants and animals.
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1:24
Polysaccharides Example 1

Glycosidic Bonds

Glycosidic bonds are covalent linkages formed between the hydroxyl group of one sugar molecule and the anomeric carbon of another, resulting in the formation of disaccharides and polysaccharides. The type of glycosidic bond (alpha or beta) influences the properties and digestibility of the carbohydrate, impacting its biological function.
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1:44
Glycosidic Linkage Formation Concept 1
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Domanda del libro di testo

 Identify each of the following pairs of Fischer projections as enantiomers or identical compounds:

a.

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Domanda del libro di testo

What are the disaccharides and polysaccharides present in each of the following?

a. <IMAGE>

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Domanda del libro di testo

 Identify each of the following pairs of Fischer projections as enantiomers or identical compounds:

c.

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Domanda del libro di testo

Melezitose, a carbohydrate secreted by insects, has the following Haworth structure:

c. Is melezitose a reducing sugar?

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Domanda del libro di testo

 Identify each of the following pairs of Fischer projections as enantiomers or identical compounds:

a.

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Domanda del libro di testo

Melezitose, a carbohydrate secreted by insects, has the following Haworth structure:

b. What monosaccharides are present in melezitose?

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