Question

6. CORRELATE THE STRUCTURE OF FRUCTOSE AND GALACTOSE WITH GLUCOSE

Answer 1

Explanation:

Glucose forms a pyranose ring structure, whereas fructose makes a furan ring structure: Hence, glucose makes a six membered ring, and fructose makes a five membered ring. ... Another difference is that in glucose, the anomeric carbon is the first carbon, whereas in fructose, the anomeric carbon is the second carbon.

Answer 2

Structure of Glucose, galactose, and fructose

Explanation:

Glucose, galactose, and fructose are all hexoses. They are structural isomers.

All 3 have the same chemical formula (C6H12O6) but a different arrangement of atoms.

Please refer to the attached picture for their structure.

• Glucose has a pyranose ring structure due to hemiacetal formation between C1 and C5 carbon atoms.
• Fructose has a five-member ring - four carbons and one oxygen.
• Galactose exists in both open-chain and cyclic form. The open-chain form has a carbonyl at the end of the chain.