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BIO NMDCAT Cytoplasmic Organelles
nmdcat.online July 4, 2026

32. The biological transport mechanism transferring newly synthesized proteins from the rough endoplasmic reticulum to the forming face of the Golgi apparatus utilizes

A. COPII-coated transport vesicles
✓
B. COPI-coated retrograde vesicles
C. Clathrin-coated endocytic pits
D. Direct cytoplasmic protein diffusion

📝 Explanation

COPII coatomer proteins assemble transport vesicles moving anterograde from the ER toward the cis-Golgi. COPI tracks retrograde movements.

📖 Additional Information

  • COPII-coated transport vesicles
  • COPI-coated retrograde vesicles
  • Clathrin-coated endocytic pits
  • Direct cytoplasmic protein diffusion

COPII coatomer proteins assemble transport vesicles moving anterograde from the ER toward the cis-Golgi. COPI tracks retrograde movements.

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