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BIO NMDCAT Cytoplasmic Organelles
nmdcat.online July 4, 2026

21. The macromolecular attachments that impart a characteristic granular or rough appearance to the cytosolic surface of the rough endoplasmic reticulum are

A. Peroxisomes
B. Lysosomes
C. Ribosomes
✓
D. Centrioles

📝 Explanation

The rough endoplasmic reticulum (RER) derives its descriptive name directly from the attachment of membrane-bound ribosomes on its outer cytosolic side.

📖 Additional Information

  • Peroxisomes
  • Lysosomes
  • Ribosomes
  • Centrioles

The rough endoplasmic reticulum (RER) derives its descriptive name directly from the attachment of membrane-bound ribosomes on its outer cytosolic side.

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