Feb 2, 2023 · What are viruses: learn what they look like, their characteristics, parts and structure described using a simple labelled picture, and how they reproduce

Most viruses have icosahedral or helical capsid structure, although a few have complex virion architecture. An icosahedron is a geometric shape with 20 sides, each composed of an …

When a single virus is in its complete form and has reached full infectivity outside of the cell, it is known as a virion. A virus structure can be one of the following: icosahedral, enveloped, …

May 16, 2021 · Virus Structure Is Defined by Capsid Symmetry and Presence or Absence of an Envelope. A complete virus particle is called a virion.

There are two categories of viruses based on general composition. Viruses formed from only a nucleic acid and capsid are called naked viruses or nonenveloped viruses. Viruses formed …

Dec 3, 2025 · A virus particle is made up of genetic material housed inside a protein shell, or capsid. The genetic material, or genome, of a virus may consist of single-stranded or double …

Apr 12, 2025 · Despite their microscopic size, viruses are surprisingly sophisticated in structure. At their core lies their genetic material—either DNA or RNA, but never both—housed inside a …