Biology Biomolecules SZABMU 2024 Reconduct
PMDC Verified Question 23 of 142
Number of amino acids in each alpha chain of hemoglobin is:
A
141
B
146
C
414
D
416
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: 141
Concept:

The primary sequence of human Hemoglobin A is highly conserved and numerically precise.

Solution:

  • Human hemoglobin consists of four total chains.


  • The two shorter alpha (\(\alpha\)) chains each consist of exactly 141 amino acids.


  • (The two slightly longer beta (\(\beta\)) chains each consist of exactly 146 amino acids).


Why other options are incorrect:

  • 146: This is the specific count for the Beta chains, not the Alpha chains.


  • 414 / 416: These are random, incorrect numbers holding no biological significance to this structure.

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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