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Asked in UHS MDCAT 2025 202541% of students get this right

An oligosaccharide is made up of at least:

Correct answer: A. two saccharide units

  • A. two saccharide units
  • B. ten saccharide units
  • C. three to ten saccharide units
  • D. more than ten saccharide units

Explanation

This is the option marked correct in the official UHS answer key, taking oligosaccharide in its broad sense of a few sugar units, beginning at two. Many textbooks instead reserve disaccharide for two units and define oligosaccharides as three to ten, which is why option (c) is such a strong distractor. Anything beyond about ten units is a polysaccharide.

This question appeared on the UHS MDCAT 2025 paper, which you can sit online with every answer explained.

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About Carbohydrates

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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