Disaccharides, such as maltose, are produced when two monosaccharides undergo a dehydration synthesis reaction. Which...
BIOLOGY
SAT 2021
Disaccharides, such as maltose, are produced when two monosaccharides undergo a dehydration synthesis reaction. Which of the following formulas represents a disaccharide?
- A. C7H13O7
- B. C12H22O11
- C. C6H12O6
- D. C10H16O8
Correct Answer: B. C12H22O11
Explanation
The disaccharide maltose is formed by the dehydration synthesis reaction of two glucose monomers. When simply adding the two glucose monomers together, it may be thought that the summation of the two (C12H24O12) will be the chemical formula of maltose. However, this does not account for the dehydration synthesis reaction in which one oxygen atom and two hydrogen atoms disappear. After accounting for these molecules the chemical formula for maltose will be represented by C12H22O11.
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