IB Biology HL A2.3.2 (HL)—Diversity of virus structure Question Bank

• Viral genomes may be DNA or RNA, single- or double-stranded, linear, circular, or segmented

• Capsids may be helical, polyhedral, conical, or complex

• Viruses may be enveloped or non-enveloped; examples include TMV, HIV, coronavirus, and lambda phage