alleryStart learning →Besides modifying proteins, what does the rough ER manufacture?
ASteroid hormones for export
BPolysaccharides for the wall
CPhospholipids for membranes
DHydrolytic digestive enzymes
Answer & Solution
Correct answer: C. Phospholipids for membranes
1. Modified proteins from the RER are incorporated into cellular membranes or secreted from the cell.
2. The RER also makes phospholipids for those cellular membranes.
3. Producing both the protein and the lipid components lets it supply complete membrane material.
4. Steroid hormones are made by the smooth ER instead, so that answer names the wrong region.
5. The RER also makes phospholipids.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 4 "Cell Structure", section 4.4 The Endomembrane System and Proteins_
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