Viruses

Virus

Acellular, infectious particle that cannot reproduce outside a host cell

Viral Receptor

Plasma membrane constituent that binds to a virus, allows virus to gain entry

Angiotensin-Converting Enzyme 2 (ACE2)

COVID viral receptor

Obligate Parasitic Entity

An organism that requires another organism to live

Single-Stranded RNA (ssRNA)

COVID genome, 30 kilobases

Nucleic Acid Core

Central part of virus, composed of its genetic material

Capsid

Protein coat

Capsomere

Individual proteins found in the capsid

Helical

Helix-shaped capsid around genetic material

Polyhedral

Many-sided capsid around genetic material with glycoprotein spikes

Spherical

Helical virus enclosed in an circular envelope with spike proteins

Complex

Virus with a polyhedral head, helical body, and legs

Tobacco Mosaic Virus

Helical Virus

Adenovirus

Polyhedral Virus

COVID

Spherical virus

Bacteriophage

Complex virus

Genome

Complete set of genetic information