Information: The simple 5- and 6-carbon sugars often react with themselves to make cyclic structures. When this happens, a new functional group is formed-a hemiacetal. A hemiacetal has an alcohol (-OH) and an ether (-OR) attached to the same carbon. An example is shown in Figure 3. D-glucose Figure 3: Cyclization of D-glucose to make -D-glucose. When this happens, a new chiral carbon is created. This carbon (the anomeric carbon) is designated or depending on whether its OH is "down" or "up" when the cyclic structure is drawn in the orientation shown in Figure 3. Q: Which two carbons of glucose become connected when the ring forms? Q: Classify the following monosaccharides as the or anomer. Model 4: Aldoses are reducing sugars. Q: When an aldehyde is oxidized, what functional group is produced? Q: Draw the product when D-glucose is oxidized. Q: When an aldehyde is reduced, what functional group is produced? Q: Draw the product when D-glucose is reduced