Viruses possess specialized structural components that enable them to protect their genetic material and infect host cells. Which viral structural component correctly matches each functional role?
- Viral nucleic acidEncodes genetic instructions (either DNA or RNA) required for viral replication
- CapsidForms a protective protein coat assembled from capsomeres around the genome
- Viral envelopeConsists of an outer lipid membrane usually derived from host cell membranes
- Tail fibersEnables specific binding of bacteriophages to surface receptors on host bacteria
Answer
Viral nucleic acid matches with encoding genetic instructions (DNA or RNA); Capsid matches with the protective protein coat made of capsomeres; Viral envelope matches with the lipid membrane derived from the host; Tail fibers match with enabling bacteriophage attachment to bacterial receptors.
Each viral structure serves a specialized role: nucleic acid carries genetic code (DNA or RNA), the capsid serves as the primary protein protective coat, the envelope provides a lipid covering derived from host cells, and tail fibers mediate specific attachment of bacteriophages to host bacteria.
Step-by-Step Solution
Key Concept
Structural organization of viruses: core genetic material (DNA or RNA), protein capsid, host-derived envelope, and phage attachment structures.