Biology Cell MDCAT 2019
PMDC Verified Question 116 of 143
The structure present in a eukaryotic cell but absent in prokaryotic cells is:
A
Ribosomes
B
Cell surface membrane
C
Nucleus
D
DNA
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Nucleus
Concept: The primary evolutionary division of life is based on the packaging of genetic material.

Solution: The term "eukaryote" literally means "true nucleus." Eukaryotic cells have their DNA enclosed within a membrane-bound nucleus, whereas prokaryotes ("before nucleus") have their DNA freely floating in a region called the nucleoid.

Distractor Autopsy: Both prokaryotes and eukaryotes possess DNA, a cell surface membrane, and ribosomes (though sizes differ: 70S vs 80S).

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.

Want to solve full-length papers under timed exam conditions?

Practice with zero-scroll lockdown sprints, dynamic latency zone timers, live peer selection telemetry, and the automated Amber mistake recovery loop.