Biology Biomolecules SZABMU 2023
PMDC Verified Question 56 of 142
Fibrous proteins do not take part in:
A
Formation of nails
B
Blood clotting
C
Oxygen transport in blood
D
Muscle contraction
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Oxygen transport in blood
Concept:

Fibrous proteins perform static, mechanical, and structural roles, whereas globular proteins perform dynamic, functional, transport, and catalytic roles.

Solution:

  • Oxygen transport in blood is solely carried out by hemoglobin.


  • Hemoglobin is a highly complex, 3D folded, functional globular protein, entirely lacking the tough, extended string-like structure of a fibrous protein.


  • Therefore, fibrous proteins have absolutely no role in gas transport.


Why other options are incorrect:

  • Formation of nails: Keratin (fibrous).


  • Blood clotting: Fibrin (fibrous polymer formed from fibrinogen).


  • Muscle contraction: Actin and myosin (fibrous structures generating mechanical tension).

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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