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

88. A genetic mutation disrupts the synthesis of clathrin proteins inside an animal cell line. Biochemically, this defect will lead to the selective arrest of

A. Simple passive diffusion of carbon dioxide gases
B. Receptor-mediated endocytosis and coated-vesicle budding
✓
C. The synthesis of ribosomal subunits inside the nucleolus
D. The transport of electrons within the cristae

📝 Explanation

Clathrin is required to structuralize and coat invaginating pits during endocytosis; its absence blocks the internalization of specific ligands.

📖 Additional Information

  • Simple passive diffusion of carbon dioxide gases
  • Receptor-mediated endocytosis and coated-vesicle budding
  • The synthesis of ribosomal subunits inside the nucleolus
  • The transport of electrons within the cristae

Clathrin is required to structuralize and coat invaginating pits during endocytosis; its absence blocks the internalization of specific ligands.

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