23. Which description most closely matches the basic genome and structure type of Coronaviruses? (A) Small, non-enveloped viruses with segmented negative-sense ssRNA. (B) Small, enveloped viruses with negative-sense ssRNA and a helical capsid only. (C) Large, non-enveloped viruses with double-stranded DNA. (D) Medium-sized, enveloped viruses with segmented double-stranded RNA. (E) Large, enveloped viruses with positive-sense single-stranded RNA

24. Which combination correctly describes influenza virus classification and key structural and genomic features? (A) Paramyxoviridae; nonsegmented positive-sense ssRNA; no envelope glycoproteins. (B) Orthomyxoviridae; segmented negative-sense ssRNA; envelope glycoproteins HA and NA. (C) Flaviviridae; segmented dsRNA; envelope glycoproteins M and E. (D) Retroviridae; negative-sense ssRNA with reverse transcriptase; capsule proteins H and N. (E) Coronaviridae; segmented positive-sense ssRNA; envelope glycoproteins HA and NA.

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