Study the linear and ring sugar structures of a monosaccharide given below and a
ID: 78328 • Letter: S
Question
Study the linear and ring sugar structures of a monosaccharide given below and answer the following questions 4-6. How many asymmetric carbon atoms are in this sugar? Is this a L or a D-sugar? Which carbon atoms of this sugar are involved in forming a phosphodiester bond between two nucleotides? A. 1 and 2 B. 2 and 4 C. 3 and 5 D. 3 and 2 E. 2 and 3 Is this sugar present in RNA or DNA? What kind of glycosodic bonds are present in storage carbohydrates and structural carbohydrates? Name some storage and structural carbohydrates in plants and animals. Which type of glycosidic bonds are present in a a :- a. disaccharide b. Nucleotide ?Explanation / Answer
4. Asymmetric carbon atom is a carbon atom which has fopur different groups attached to it.The above sugar is a ribose sugar with five assymetric carbon atoms and it is a D sugar.
5. c. The third and the fifth carbon atoms form the phosphodiester bonds between two nucleotides.
6. It is present in RNA.
The glycosidic bonds that are present are O-glycosidic bonds,S-glycosidic bonds,N-glycosidic bonds.
O-glycosidic bonds are thebonds where the glycosidic oxygen that links the glycoside to the a glycone or reducing end sugar.
S-glycosidic bonds oxygen of the glycosidic bond is replaced with a sulfur atom.
N-glycosidic bonds.the glycosidic bond oxygen replaced with nitrogen.
some of the storage and structural carbohydrates are starch , glycogen amylose ,cellulose, pectin .
7.The glycosidic bond present in disaccharides is O glycosidic bond while in the nucleotides it is N glycosidic bond.