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This Concept Map, created with IHMC CmapTools, has information related to: Answers_Characteristics of viruses, Most range in size from 5 to 300 nanometers (nm) nanometer 1/1,000,000,000 of a meter, polyhedral viruses description consist of nucleic acid surrounded by a polyhedral (many-sided) shell or capsid, usually in the form of an icosahedron, binal (complex) viruses description have neither helical nor polyhedral forms, are irregular shaped, or have complex structures, Sizes, Shapes, and General Characteristics of Viruses shapes of viruses enveloped virus, consist of nucleic acid surrounded by a polyhedral (many-sided) shell or capsid, usually in the form of an icosahedron icosahedron A geometric form having 20 triangular faces, 30 edges, and 12 vertices., usually much smaller than bacteria and submicroscopic size range Most range in size from 5 to 300 nanometers (nm), Sizes, Shapes, and General Characteristics of Viruses characteristics of viruses Viruses are infectious agents with both living and nonliving characteristics., Viruses are infectious agents with both living and nonliving characteristics. living characteristics They reproduce, but only in living host cells., Sizes, Shapes, and General Characteristics of Viruses shapes of viruses helical viruses, helical viruses description consist of nucleic acid surrounded by a hollow protein cylinder or capsid and possessing a helical structure, enveloped virus description consist of nucleic acid surrounded by either a helical or polyhedral core and covered by an envelope, Sizes, Shapes, and General Characteristics of Viruses shapes of viruses polyhedral viruses, Sizes, Shapes, and General Characteristics of Viruses size of viruses usually much smaller than bacteria and submicroscopic, Viruses are infectious agents with both living and nonliving characteristics. nonliving characteristics They carry out no metabolism on their own and must replicate using the host cell's metabolic machinery., Viruses are infectious agents with both living and nonliving characteristics. nonliving characteristics The vast majority of viruses possess either DNA or RNA but not both., Sizes, Shapes, and General Characteristics of Viruses shapes of viruses binal (complex) viruses, Viruses are infectious agents with both living and nonliving characteristics. nonliving characteristics They are acellular. They contain no cytoplasm or cellular organelles., Viruses are infectious agents with both living and nonliving characteristics. living characteristics They can mutate.
