Which organelle lacks ribosomes on its outer surface and is primarily responsible for lipid synthesis and detoxification of poisons in a cell?

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A RER
B SER
C Lysosome
D Ribosome

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Answer: B. SER

Smooth ER has no ribosomes on its surface, which is why it looks smooth. It makes lipids and, in liver cells, helps remove poisons and drugs. RER has ribosomes and makes proteins.

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Which organelle lacks ribosomes on its outer surface and is primarily responsible for lipid synthesis and detoxification of poisons in a cell?

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