Which of the following categories includes all others in the list?
a. Disaccharide
b. Polysaccharide
c. Starch
d. Carbohydrate

검증된 단계별 안내

Begin by understanding the definitions of each term listed: disaccharide, polysaccharide, starch, and carbohydrate.

A disaccharide is a type of carbohydrate composed of two monosaccharide molecules. Examples include sucrose and lactose.

A polysaccharide is a carbohydrate consisting of a large number of monosaccharide units bonded together. Examples include cellulose and glycogen.

Starch is a specific type of polysaccharide that serves as a storage form of energy in plants.

Carbohydrate is the broadest category, encompassing all types of sugars and their polymers, including monosaccharides, disaccharides, polysaccharides, and starch. Therefore, carbohydrate includes all other categories listed.

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주요 개념

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Carbohydrates

Carbohydrates are organic molecules composed of carbon, hydrogen, and oxygen, typically in a ratio of 1:2:1. They serve as a primary energy source for living organisms and are classified into monosaccharides, disaccharides, and polysaccharides based on their complexity. Understanding carbohydrates is essential for identifying their hierarchical structure in biological systems.

Disaccharides

Disaccharides are a type of carbohydrate formed by the combination of two monosaccharide molecules through a glycosidic bond. Common examples include sucrose and lactose. They are simpler than polysaccharides and serve as an intermediate energy source, highlighting their position within the carbohydrate classification.

Polysaccharides

Polysaccharides are complex carbohydrates composed of long chains of monosaccharide units linked together. They function primarily as energy storage (e.g., starch in plants) or structural components (e.g., cellulose in plant cell walls). Understanding polysaccharides is crucial for recognizing their role and classification within the broader category of carbohydrates.