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BIO by M Tahir ( Lecturer Al Azhar ) virus chapter
nmdcat.online July 11, 2026

In structural classification, a virus possessing an icosahedral capsid exhibits

A. Helical symmetry
B. Polyhedral symmetry with 20 triangular faces
✓
C. Complex head-tail symmetry
D. Filamentous symmetry

📝 Explanation

Icosahedral viruses have a highly symmetrical capsid composed of 20 triangular faces, providing maximum stability.

📖 Additional Information

  • Helical symmetry
  • Polyhedral symmetry with 20 triangular faces
  • Complex head-tail symmetry
  • Filamentous symmetry

Icosahedral viruses have a highly symmetrical capsid composed of 20 triangular faces, providing maximum stability.

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