(a) Write Haworth structure, of ''Lactose''.
(b) (i) What are non-essential amino acids?
(ii) Write Zwitter ion structure of ''glycine''.
(c) Name the nitrogenous base present in RNA but not in DNA.

(a) Write Zwitterion structure of glycine. (b) What is dematuration of proteins ?

Write the zwitter ion structure of alpha -amino acids ?

Amino acids exist in Zwitter ion form. What is the structure of glycine at pH = 4?

Write the full form of DNA and RNA. Name the specific nitrogenous bases present in DNA and RNA.

(a) What are essential and non-essential amino acids ? (b) Give chemical name of vitamin-A. (c) Name the enzyme which converts glucose into ethanol.

(a) Write the Haworth structure of maltose. (b) What is peptide linkages? How many peptide bonds are present in a tetrapeptide? (c) Name the hormone which regulates blood sugar level in the body.

(a) Give one example each of essential and non-essential amino acids. (b) What is the difference between DNA and RNA ?

Write the main structural difference between DNA and RNA . Of the four bases, common to both DNA and RNA .

(a) What is meant by (i) a peptide linkage (ii) a glycosidic linkage? (b) Name the bases present in RNA. Which one of these is not present in DNA?

Nucleic acids are the biopolymers in which the repeating structural monomeric units is a nucleotide. The nucleotides structural monomeric unit is a nucleotide. The nucleotides consist of three components, a pentose sugar (D-(0)-" ribose or 2 - deoxy "-D-(-)-"ribose, heterocyclic base") , (purines i.e., adenine and guanine and pyrididines i.e., thymine, cytosine and uracil) and phosphoric acid. Sugar - base constitutes nucleosides. the two types of nucleic acids are DNA and RNA. Nucleic acids play significant role in replication and protein synthesis. Name the base which is present in RNA but not in DNA.