The Endoplasmic Reticulum (ER) has TWO main forms. The ROUGH ER differs from the SMOOTH ER because rough ER:
AHas more folds in its membrane structure
BLacks any ribosomes attached to it
CHas ribosomes attached, producing proteins
DIs found only in the nuclear membrane region
Answer & Solution
Correct answer: C. Has ribosomes attached, producing proteins
Rough ER has ribosomes attached to its surface, where it produces proteins. Smooth ER lacks ribosomes and makes lipids and detoxifies. Both ERs are membrane sacs.
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