BIOMOLECULES AND ENZYMES

Detailed explanation-1: -The six membered cyclic structure of glucose is called pyranose structure or form, in analogy with Pyran.

Detailed explanation-2: -The ring is made up of six members that contain 5 Carbon and 1 Oxygen atom. The pyranose ring of glucose is formed by reacting the hydroxyl group positioned on the fifth Carbon of glucose with the aldehyde group attached to the first position of the Carbon atom of the same glucose molecule.

Detailed explanation-3: -A pyranose is a cyclic structure that contains five carbon atoms and an oxygen. If the carbohydrate represents a ketohexose, the furanose ring is typically used. The furanose ring contains four carbon atoms and an oxygen.

Detailed explanation-4: -Pyranose ring structure of glucose is due to hemiacetal formation between C1 and C5 carbon atoms. In general, a pyranose is any cyclic isomer that has a five carbon atoms and one oxygen atom in a ring of six atoms.

Detailed explanation-5: -The hemiacetal forms when a hydroxyl group along the carbon chain reaches back and bonds to the electrophilic carbonyl carbon. As a result, five-and six-membered rings are very common in sugars. Five-membered rings are called “furanoses” and six-membered rings are called “pyranoses".