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

검증된 단계별 안내

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'.

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이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

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.

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.

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.

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