Biology Biomolecules UHS 2022
PMDC Verified Question 72 of 142
Human bone cells contain ____ % of water.
A
20
B
85
C
40
D
90
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: 20
Concept:

Water is the primary medium of life, but its percentage varies drastically depending on the specific tissue's function and structural density.

Solution:

  • Brain cells: Require high metabolic activity and fluidity, containing about 85-90% water.


  • Bone cells: Require extreme structural rigidity and calcification, containing only about 20% water.


  • Jellyfish: Can be up to 99% water.


Why other options are incorrect:

  • 85% and 90% are characteristic of brain cells, not dense connective tissues like bone.

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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