In Cx(H2O)y x ranges from______________?
Correct answer: B. 3 to many thousand
- A. 1 to 3 thousand
- B. 3 to many thousand
- C. 3 to 5 thousand
- D. 5 to 9 thousand
Explanation
In the general formula Cx(H2O)y for carbohydrates, x may begin at 3 in trioses and extend to many thousands in polysaccharides. The likely mistake is choosing 3 to 5 thousand by treating the range as a fixed upper limit rather than recognising that polysaccharides can contain many more sugar units.
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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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