Biology Cell MDCAT 2019
PMDC Verified Question 113 of 143
Smooth endoplasmic reticulum is responsible for the metabolism of:
A
Nucleic acids
B
Proteins
C
Lipids
D
Carbohydrates
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Lipids
Concept: The structural difference between Rough ER (having ribosomes) and Smooth ER dictates their biochemical roles.

Solution: The Smooth Endoplasmic Reticulum (SER) lacks ribosomes, rendering it incapable of protein synthesis. Instead, it is highly active in the synthesis and metabolism of lipids (like steroid hormones) and detoxification processes.

Distractor Autopsy: Protein metabolism occurs in the Rough ER and cytoplasm. Nucleic acid metabolism occurs primarily in the nucleus.

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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