Viruses formed with only the capsid and nucleic acid.

Noneveloped viruses (Naked viruses)

Viruses formed with a capsid, nucleic acid, and a lipid layer.

Enveloped Viruses 

A portion of the phospholipid membrane acquired through virion buds from a host cell.

University of Southern Mississippi

Structures associated with Animal Viruses include: 

- Capsid
- Capsomer
- Viral lipid envelope
- Spike proteins

Animal Virus Structures

Structures of Bacteriophages include:

- Capsid
- Viral genome
- Sheath
- Tail fibers

Bacteriophage  Stuctures

https://openstax.org/details/books/microbiology/

Microbiology covers the scope and sequence requirements for a single-semester microbiology course for non-majors. The book presents the core concepts of microbiology with a focus on applications for careers in allied health. The pedagogical features of the text make the material interesting and accessible while maintaining the career-application focus and scientific rigor inherent in the subject matter. Microbiology’s art program enhances students’ understanding of concepts through clear and effective illustrations, diagrams, and photographs.

Microbiology is produced through a collaborative publishing agreement between OpenStax and the American Society for Microbiology Press. The book aligns with the curriculum guidelines of the American Society for Microbiology.

OpenStax Microbiology Textbook

A protein coat that surrounds the viral genome.

Capsid

Capsomer

Viral envelope

Viral spikes are protein structures that extend outward from the capsid on some naked and enveloped viruses. They function to attach the virus to host cells and determine the viral host range.

Viral Spikes

Connects the polyhedral head to the tail fibers and tail pins

Sheath

Helps with viral attachment to the receptors of the host cell surface for entry

Tail fibers/pins

Bacteriophage replication involves 2 types of life cycles: The Lytic Cycle and the Lysogenic Cycle.

Learn Before

Related

Learn After