Question
Differentiate between globular and fibrous proteins.
✓
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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Note: In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
Reason: $\text{E}^{\ominus}_{\text{Cu}^{2+}/\text{Cu}}$ is negative.
→- Both assertion and reason are true and the reason is the correct explanation of assertion.
- Both assertion and reason are true and the reason is not the correct explanation of assertion.
- Assertion is true but the reason is false.
- Both assertion and reason are false.
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