Biology Cell PMC 2020
PMDC Verified Question 104 of 143
70S sized ribosomes are found in the cells of:
A
Fungi
B
Bacteria
C
Protozoans
D
Algae
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Bacteria
Concept: The evolutionary divergence between domains is reflected in ribosomal size.

Solution: Bacteria are prokaryotes, and their standard cytoplasmic ribosomes have a sedimentation coefficient of 70S.

Distractor Autopsy: Fungi, protozoa, and algae are all eukaryotic organisms. Their primary cytoplasmic ribosomes are 80S (though their mitochondria/chloroplasts contain 70S, the question refers to the primary cell type).

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.