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

The characteristic feature of complex viruses is the presence of

A. Only an icosahedral capsid
B. Both helical and icosahedral components with specialized structures
✓
C. Only a lipid envelope
D. Only a circular RNA genome

📝 Explanation

Complex viruses, such as bacteriophage T4, possess an icosahedral head, helical tail, and specialized attachment structures.

📖 Additional Information

  • Only an icosahedral capsid
  • Both helical and icosahedral components with specialized structures
  • Only a lipid envelope
  • Only a circular RNA genome

Complex viruses, such as bacteriophage T4, possess an icosahedral head, helical tail, and specialized attachment structures.

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