Give the name of one or more polysaccharides that matches each of the following descriptions:
a. not digestible by humans

Guida verificata passo dopo passo

Step 1: Understand the term 'polysaccharide'. Polysaccharides are long chains of monosaccharide units linked by glycosidic bonds. They serve various functions such as energy storage (e.g., starch, glycogen) and structural support (e.g., cellulose, chitin).

Step 2: Recognize that the problem asks for a polysaccharide that is 'not digestible by humans'. This means the polysaccharide cannot be broken down by human digestive enzymes into its monosaccharide components.

Step 3: Recall that humans lack the enzyme cellulase, which is required to break the β(1→4) glycosidic bonds found in cellulose. Therefore, cellulose is a polysaccharide that is not digestible by humans.

Step 4: Consider other examples of indigestible polysaccharides. Chitin, another structural polysaccharide found in the exoskeletons of arthropods and fungal cell walls, is also not digestible by humans due to its β(1→4) glycosidic bonds and the presence of N-acetylglucosamine units.

Step 5: Conclude that cellulose and chitin are examples of polysaccharides that match the description of being 'not digestible by humans'.

Risposta video verificata per un problema simile:

Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.

Durata del video:

Concetti chiave

Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.

Polysaccharides

Polysaccharides are complex carbohydrates composed of long chains of monosaccharide units. They serve various functions in living organisms, including energy storage and structural support. Common examples include starch, glycogen, and cellulose, each differing in their structure and digestibility.

Video consigliato:

Percorso guidato

1:24

Polysaccharides Example 1

Digestibility

Digestibility refers to the extent to which a substance can be broken down and absorbed by the digestive system. In the context of polysaccharides, some, like starch, are digestible by humans, while others, such as cellulose, are not due to the lack of necessary enzymes to break them down.

Video consigliato:

Percorso guidato

2:01

Digestion of Proteins Concept 1

Cellulose

Cellulose is a polysaccharide that forms the structural component of plant cell walls. It is composed of glucose units linked by β-1,4-glycosidic bonds, making it indigestible for humans. While it provides dietary fiber, aiding in digestion, it cannot be broken down into glucose for energy.

Pratica correlata

Domanda del libro di testo

Describe the similarities and differences in the following:

a. amylose and cellulose

598

views

Domanda del libro di testo

Give the name of one or more polysaccharides that matches each of the following descriptions:

b. contains only ß(1→4)-glycosidic bonds

634

views

Domanda del libro di testo