Biology Cell MDCAT 2017
PMDC Verified Question 134 of 143
DNA molecule in prokaryotes is:
A
Single, circular, double stranded molecule not bound by membrane
B
Linear, double stranded molecule
C
Double, circular molecule
D
Single, circular, double stranded and membrane bound
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Single, circular, double stranded molecule not bound by membrane
Concept: Prokaryotic genomes are optimized for rapid replication and simplicity.

Solution: The main genomic DNA in prokaryotes (like bacteria) consists of a single, circular, double-stranded DNA molecule that resides in the nucleoid region, not bounded by any nuclear membrane.

Distractor Autopsy: Eukaryotic DNA is linear and membrane-bound. Prokaryotic DNA is circular, but emphatically lacks a membrane boundary.

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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