Asked in Premeth past paper pool — Biology

The polysaccharide that contains nitrogen is

Correct answer: A. Chitin

  • A. Chitin
  • B. Starch
  • C. Cellulose
  • D. Glycogen

Explanation

Chitin is the correct answer because it is a polysaccharide that contains nitrogen, specifically in its N-acetylglucosamine monomers. This makes it structurally distinct from other common polysaccharides like starch, cellulose, and glycogen, which are composed solely of glucose units and do not contain nitrogen. Chitin is found in the exoskeletons of arthropods and is a key component in the cell walls of fungi.

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Carbohydrates are organic compounds classified as monosaccharides, disaccharides and polysaccharides according to their structure and hydrolysis products. The topic covers glycosidic bonds, glucose and fructose, sucrose, lactose and maltose, starch, glycogen and cellulose, along with their roles in energy storage, structural support and food tests.

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