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Rough Endoplasmic Reticulum
Grade Level
AP Biology
APB.112 Rough Endoplasmic Reticulum
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Two drugs are tested. Drug R blocks ribosome attachment to ER. Drug G blocks a Golgi enzyme that modifies proteins after they arrive. Which result best supports the rough ER role rather than the Golgi role?
A
Drug G prevents later modification of a protein already found in Golgi compartments.
B
Both drugs reduce ATP production in mitochondria equally.
C
Drug R reduces the amount of newly made secretory protein inside ER lumen, while Drug G does not prevent initial ER entry.
D
Drug R changes the shape of the nucleus but secretory protein still enters ER normally.
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