Answered: Glucose and fructose are both C6H12O6.… | bartleby

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Question

**Glucose and Fructose Structural Comparison**

*Question:*
Glucose and fructose are both C₆H₁₂O₆. What is the structural difference between them?

*Options:*

1. Glucose is a linear molecule and fructose is a ring.

2. Glucose is a five-membered ring and fructose is a six-membered ring.

3. Fructose is a five-membered ring and glucose is a six-membered ring.

4. Glucose is found in the boat conformation and fructose is a chair conformation.

*Explanation:*

The structural differences between glucose and fructose can be attributed to their ring formations. Although both are hexoses (with the chemical formula C₆H₁₂O₆), glucose typically forms a six-membered pyranose ring, while fructose forms a five-membered furanose ring in its cyclic form. Understanding these structural variations is fundamental in biochemistry, especially in the metabolism and functional properties of carbohydrates.

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