What type of linkage are responsible for the formation of:
(i) Primary structure of proteins
(ii) Cross-linking of polypeptide chains
(iii) a-helix formation
(iv) `beta`-sheet structure ?

What structural level of protein involves the coiling of a single polypeptide chain stabilised by H-bonds ?

Explain the terms primary and secondary structures of proteins. What is the difference between alpha -helix and beta -pleated sheet structure of proteins?

What type of bonding occurs in (a) alpha -helix configuration (b) proteins and (c) beta -sheet ?

Defines the following as related to proteins: (i)Peptide linkage (ii)Primary structure

Defines the following as related to proteins: (i)Peptide linkage (ii)Primary structure

Define the following as related to proteins : (i) Peptide linkage (ii) Primary structure (iii) Denaturation

Which of the following statements regarding the structure of proinsulin and mature insulin are not correct ? (i) Proinsulin is made up of three polypeptide chains -A,B and C (ii) c- polypeptide chain with 33 amino acids is removed prior to insulin formation (iii) Mature insulin is made up of 51 amino acids arranged in two polypeptide chain -A and B (iv) Polypeptide chain A has 30 amino acids and polypeptide chain B has 21 amino acids (v) Polypeptide chains A and B are interconnected by only one S-S linkage.

The union of several polypeptide chains to form a complete protein is regarded at what level of protein structure?

Defines the following as related to proteins: (i)Peptide linkage,(ii)Primary structure (iii)Denaturation

(i) Deficiency of which vitamin causes scurvy ? (ii) What type of linkage is responsible for the formation of proteins ? (iii) Wrtie the product formed when glucose is treated with HI.