Essential Biochemistry - Carbohydrate Chemistry (Section 3 - No. 41)

Which of the following is a characteristic used to differentiate between glucose and fructose?
The presence of a ketone or aldehyde group
The number of carbon atoms
The direction of rotation of polarized light
The solubility in water

Explanation

Glucose is an aldose (aldehyde), and fructose is a ketose (ketone).

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