ulsalullailut Ul glucose linked to muctose. Similarly, link ing three or more monosaccharides forms a polysaccharide such as starch, glycogen, or cellulose (fig. 6.3). Question 1 Examine figure 6.2. hich groups of a glucose molecule are involved in forming a polysaccharide? Shade the groups with a pencil. Solution In the structiure of glucose, the OH groups are present on 1, 2, 3, and 4th position of the ring and at 5th position CH2OH is present. When a glucose molecule involves in the formation of polysaccharide, the OH group at 1st position of a aglucose molecule interacts with the OH group at 4th position of another glucose molecule..