Which of the following cyclic structures do the ring forms of monosaccharides consist of?

Question

Quizplus · Accepted Answer

Monosaccharides can exist in both linear and cyclic forms. In the presence of an alcohol group, such as in the monosaccharide, the aldehyde or ketone group can react with the alcohol to form a hemiacetal or hemiketal, respectively. The most common cyclic form of monosaccharides is formed by the hemiacetal reaction, resulting in a ring structure known as a pyranose (six-membered ring) or furanose (five-membered ring). Therefore, the ring forms of monosaccharides consist of hemiacetals.

Which of the Following Cyclic Structures Do the Ring Forms