Viruses What Are Viruses? Viruses are tiny (20 - 400 nm) particles composed of a nucleic acid core (either DNA or RNA) surrounded by a protein coat (capsid) and sometimes…

Bacteria and Viruses Chapter 20 20.1 - Bacteria Prokaryotes â single-celled organisms that do not have membrane bound organelles Has three shapes: Bacillus â rod-shaped…

Viruses What are they? How do they work? Where do they come from? And… What good are they? Viruses Infectious agents acting INSIDE cells Key Concepts A virus has a genome…

VIRUSES A tiny, non-living parasite (particle) that enters and reproduces inside a living host cell. Two types: 1. Active 2. Hidden Characteristics of Viruses Non-living…

Viruses Living or non-living? This is debatable! Living Thing? Viruses can reproduce. Non-living thing? Viruses can only show characteristics of a living thing (reproduce)…

Genetics of Viruses and Bacteria Microbial Model Systems Viruses called bacteriophages can infect and set in motion a genetic takeover of bacteria, such as Escherichia coli…

Viruses of Bacteria Chapter 13 General Characteristics of Viruses Non-living entities Not considered organisms Can infect organisms of every domain All lifeforms Commonly…

Slide 1 Virology   Introduction to viruses   Viruses consist of a nucleic acid (either DNA or RNA) associated with proteins encoded by the nucleic acid. The virus may…

Viruses Viruses At the boundary of life, between the macromolecules (which are not alive) and the prokaryotic cells (which are), lie the viruses and bacteriophages (phages).…

Slide 1 An Introduction to Marine Viruses S After this class students will be able to: Understand the significance of viruses in the marine ecosystem; Identify three important…