How can reducing and non-reducing sugars be distinguished? Mention the structural feature characterizing reducing sugars

3

(a)

Explain the following terms
(i) Mutarotation
(ii) Avitaminosis

3

(a)

Answer the following questions briefly:
(i) What are reducing sugars?
(ii) What is meant by denaturation of a protein?
(iii) How is oxygen replenished in our atmosphere?

3

(a)

Name the main diseases caused due to lack of vitamin and its source in each of the following: A,B₆ and E₆ and E.

3

(a)

Define the following terms:
(i) Co-enzymes
(ii) Mutation in biomolecules
(iii) Nucleotides

3

(a)

Write the chemical reaction equations for the glucose with
(i) acetic anhydride
(ii) NH₂OH Also draw Fischer projections of D-glucose and L-glucose.

3

(a)

Define the following and give one example of each:
(a) Isoelectric point
(b) Mutarotation
(c) Enzymes

3

(a)

(a) What is denaturation and renaturation of proteins?
(b) Give reason:Amylase present in the saliva becomes inactive in the stomach

3

(a)

Answer the following queries about proteins:
(i) How are proteins related to amino acids?
(ii) How are oligopeptides different from polypeptides?
(iii) When is a protein said to be denaturated?

3

(a)