Question
Attempt any five of the following:
$(a)$ Define native state in reference to proteins.
$(b)$ Define the following terms:
$a.$ Polysaccharides
$b.$ Nucleotides
$(c)$ Deficiency of which vitamin causes scurvy?
$(d)$ What happens when $D-$glucose is treated with the following? Give equations to support your answer.
$a. HI$
$b. HNO_3$
$(e) $Name the disaccharide which on hydrolysis gives glucose and galactose.
$(f)$ Write the products obtained after hydrolysis of lactose.
$(g)$ Give the reaction of glucose with hydrogen cyanide. Presence of which group is confirmed by this reaction?

Answer

Attempt any five of the following:
$(i)$ Native state of protein is the sequence in which the amino acids are linked together with the help of peptide bond.
$(ii) a.$ Polysaccharides contain a large number of monosaccharide units joined together by glycosidic linkages.
$b.$ Sugar $+$ Phosphate $+$ base  Nucleoside linked to a phosphate group.
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