Biology Cell MDCAT 2017
PMDC Verified Question 133 of 143
Ribosomal RNA is synthesized in:
A
Nucleolus
B
Nucleoplasm
C
Peroxisome
D
Golgi body
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Nucleolus
Concept: The assembly of ribosomes requires a dedicated, concentrated region of DNA transcription within the nucleus.

Solution: The nucleolus is a darkly staining, non-membranous region within the nucleus where the genes encoding Ribosomal RNA (rRNA) are actively transcribed and where initial ribosomal subunit assembly occurs.

Distractor Autopsy: Nucleoplasm is the fluid of the nucleus but the specific site of rRNA synthesis is the nucleolus. Golgi and peroxisomes are cytoplasmic organelles.

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