Multiple Choice
In the context of ER processing and transport, the rough endoplasmic reticulum (RER) appears “rough” because its cytosolic surface is studded with which structures?
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13. Intracellular Protein Transport
ER Processing and Transport
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In the context of ER processing and transport, what is the primary function of the rough endoplasmic reticulum (rough ER) in eukaryotic cells?
A
ATP production through oxidative phosphorylation and maintenance of the proton gradient
B
Synthesis of most membrane lipids and detoxification of drugs via cytochrome P450 enzymes
C
Synthesis and initial processing (folding and modification) of proteins destined for secretion, membranes, or lysosomes
D
Packaging and sorting of proteins into secretory vesicles for delivery to the plasma membrane
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