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BIO NMDCAT CELL STRUCTURE & FUNCTION
nmdcat.online July 3, 2026

94. The treatment of green algal plant cells with the drug monensin blocks the transport of newly synthesized matrix polysaccharides out of the Golgi apparatus. The immediate structural impact on the developing cell wall will be a severe reduction in the deposition of

A. Crystalline cellulose microfibrils
B. Pectins and hemicelluloses within the primary wall matrix
✓
C. Insoluble mineralized lignin inside the secondary core
D. Suberin molecules along the outer Casparian strip

📝 Explanation

While cellulose is built directly at the plasma membrane, matrix pectins and hemicelluloses are processed in the Golgi and shipped out via vesicles.

📖 Additional Information

  • Crystalline cellulose microfibrils
  • Pectins and hemicelluloses within the primary wall matrix
  • Insoluble mineralized lignin inside the secondary core
  • Suberin molecules along the outer Casparian strip

While cellulose is built directly at the plasma membrane, matrix pectins and hemicelluloses are processed in the Golgi and shipped out via vesicles.

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