Multiple Choice
What is the primary difference between the rough endoplasmic reticulum (ER) and the smooth endoplasmic reticulum (ER) in eukaryotic cells?
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2. Cell Chemistry & Cell Components
Endomembrane System: Protein Secretion
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Which of the following is not a function of the smooth endoplasmic reticulum?
A
Lipid synthesis
B
Calcium ion storage
C
Protein synthesis
D
Detoxification of drugs
Verified step by step guidance1
Understand the role of the smooth endoplasmic reticulum (SER) in a cell. The SER is primarily involved in lipid synthesis, detoxification of drugs, and calcium ion storage.
Recognize that protein synthesis is not a function of the smooth endoplasmic reticulum. Instead, protein synthesis is primarily associated with the rough endoplasmic reticulum (RER), which has ribosomes on its surface.
Review the functions of the smooth endoplasmic reticulum: it synthesizes lipids, metabolizes carbohydrates, detoxifies drugs and poisons, and stores calcium ions.
Compare the functions listed in the problem with the known functions of the smooth endoplasmic reticulum to identify which one does not belong.
Conclude that protein synthesis is not a function of the smooth endoplasmic reticulum, as it is associated with the rough endoplasmic reticulum.
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