Which of the following correctly describes the role of the smooth endoplasmic

reticulum in cells?

A) Protein synthesis

B) DNA replication

C) Lipid synthesis and detoxification

D) ATP production

Click to reveal answer

Answer: C. Lipid synthesis and detoxification

Explanation: The smooth endoplasmic reticulum (SER) is involved in lipid synthesis

and detoxification processes. Unlike the rough ER, it does not have ribosomes on its

surface and is not involved in protein synthesis.

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Day 118 MCAT Practice Question