Definition

1. Noun:
   • A carbohydrate: A saccharide is an essential structural component of living cells and a source of energy for animals. It includes simple sugars with small molecules as well as macromolecular substances. Saccharides are classified according to the number of monosaccharide units they contain.

Usage Examples

• Noun:
  • Glucose is a simple saccharide.
  • The scientist analyzed the complex saccharide structure of the plant cell wall.

Advanced Usage

• Technical Classification: In biochemistry, saccharides are often categorized based on their polymerization degree: monosaccharides (e.g., glucose), disaccharides (e.g., sucrose), oligosaccharides, and polysaccharides (e.g., starch, cellulose).
  • Cellulose, a polysaccharide, is the most abundant organic polymer on Earth.

Variants and Related Words

• Monosaccharide (n): A simple sugar that cannot be hydrolyzed to give a simpler sugar.
  • Fructose is a monosaccharide found in many plants.
• Disaccharide (n): A sugar composed of two monosaccharides.
  • Lactose is a disaccharide composed of galactose and glucose.
• Polysaccharide (n): A carbohydrate whose molecules consist of a number of sugar molecules bonded together.
  • Glycogen is a polysaccharide that serves as a form of energy storage in animals.

Synonyms

• Carbohydrate: A broad term for organic compounds consisting of carbon, hydrogen, and oxygen, typically including sugars, starch, and cellulose.
• Sugar: Often used informally to refer to simple, sweet-tasting, soluble saccharides.

Related Phrases

• Reducing saccharide: A sugar that serves as a reducing agent due to the presence of a free aldehyde or ketone group.
  • All monosaccharides and some disaccharides like maltose are reducing saccharides.

Noun

1. an essential structural component of living cells and source of energy for animals; includes simple sugars with small molecules as well as macromolecular substances; are classified according to the number of monosaccharide groups they contain