Biology Bioenergetics SZABMU 2022
PMDC Verified Question 54 of 67
Each granum consists of _ thylakoids.
A
40-60
B
25-50
C
50-70
D
100-200
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: 25-50
Concept:

Thylakoids are flattened membrane sacs inside the chloroplast that stack on top of each other to maximize light absorption.

Solution:

  • A stack of thylakoids is called a granum (plural: grana).
  • A typical granum consists of a stack of 25 to 50 thylakoid sacs.


Why other options are incorrect:

  • The other numerical ranges over-estimate or under-estimate the standard biological average taught for granum 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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