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12th ICSE
IMPORTANT
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Amylopectin and glycogen both have branched structures. How do they differ from one another?

Important Questions on Biomolecules

MEDIUM
12th ICSE
IMPORTANT
All In One ISC Chemistry Class 12>Chapter 14 - Biomolecules>Chapter Practice>Q 19
Why do proteins form an indispensable part of our food?
HARD
12th ICSE
IMPORTANT
All In One ISC Chemistry Class 12>Chapter 14 - Biomolecules>Chapter Practice>Q 20

Structures of valine and alanine are given below. Show the peptide linkage in valylalanine.

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HARD
12th ICSE
IMPORTANT
All In One ISC Chemistry Class 12>Chapter 14 - Biomolecules>Chapter Practice>Q 21
Sulphanilic acid exists as a zwitter ion, while p-aminobenzoic acid does not. Explain.
HARD
12th ICSE
IMPORTANT
All In One ISC Chemistry Class 12>Chapter 14 - Biomolecules>Chapter Practice>Q 22
Draw the zwitterion of an essential amino acid which contains phenyl ring.
MEDIUM
12th ICSE
IMPORTANT
All In One ISC Chemistry Class 12>Chapter 14 - Biomolecules>Chapter Practice>Q 23
Mention the type of linkages responsible for the formation of the primary structure of proteins.
 
HARD
12th ICSE
IMPORTANT
All In One ISC Chemistry Class 12>Chapter 14 - Biomolecules>Chapter Practice>Q 23
Mention the type of linkages responsible for the formation of α-helix formation.
HARD
12th ICSE
IMPORTANT
All In One ISC Chemistry Class 12>Chapter 14 - Biomolecules>Chapter Practice>Q 23
Mention the type of linkages responsible for the formation of β-pleated sheet structure.
HARD
12th ICSE
IMPORTANT
All In One ISC Chemistry Class 12>Chapter 14 - Biomolecules>Chapter Practice>Q 24
Why does a native protein lose its biological activity on heating ?