Which of the following is not a carbohydrate:
Correct answer: D. Lactic acid (C3H6O3)
- A. Glucose (C6H12O5)
- B. Sucrose (C2H2O)
- C. Rhamnose (C6H12O5)n
- D. Lactic acid (C3H6O3)
Explanation
Lactic acid is an organic molecule. Its chemical formula is C3H6O3 Lactic acid has the same proportion of carbon, hydrogen and oxygen as carbohydrates but it is technically not a carbohydrate.
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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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