Biology Cell MDCAT 2018
PMDC Verified Question 120 of 143
Which statement is correct about mitochondria and chloroplast?
A
Number of mitochondria and chloroplast are same in all cells
B
Chloroplast and mitochondria are single membrane structure
C
Chloroplast and mitochondria cannot live independently
D
70S ribosome is attached with the inner membrane of mitochondria and chloroplast
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: 70S ribosome is attached with the inner membrane of mitochondria and chloroplast
Concept: Mitochondria and chloroplasts are semi-autonomous organelles originating from ancient prokaryotic endosymbionts.

Solution: Both organelles retain their own circular DNA and 70S ribosomes located within their matrix/stroma, which allow them to synthesize some of their own structural proteins.

Distractor Autopsy:
  • Single membrane: Both are double-membrane structures.
  • Same number: Organelle counts vary depending on cell energy demands.

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.