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Biomolecules — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryBiomolecules2 Marks
Question
Differentiate between globular and fibrous proteins.
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Answer

Difference between globular protein and fibrous protein:
 
Fibrous protein
Globular protein
1.
It is a fibre-like structure formed by the polypeptide chain. These proteins are held together by strong hydrogen and disulphide bonds.
The polypeptide chain in this protein is folded around itself, giving rise to a spherical Structure.
2.
It is usually insoluble in water, but soluble in strong acids and bases.
It is usually soluble in water, acids, bases and salts.
3.
They have comparatively stronger intermolecular forces of attraction.
They have weak intermolecular hydrogen bonding.
4.
Example: Collagen, fibroin, myosin, hair, skin,silk, wool, etc.
Egg, albumin, casein of milk, insulin.

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