BSC 114 Chapter Notes - Chapter 19: Retrovirus, Vertically Transmitted Infection, Viral Hemorrhagic Fever
16 Nov 2016
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Section 19. 1: a virus consists of a nucleic acid surrounded by a protein coat. Virus- an infectious particle consisting of little more than genes packaged in a protein coat: cannot reproduce or carry out metabolism outside of a host cell. Believed to be bacteria, but infection was still present after filtration. Pathogen only replicate within the host it infected. Virus was found using the electron microscope. Viruses are very small: millions could easily fit on a pinhead, even the largest known virus is barely visible under the light microscope. Viruses are classified as dna viruses or rna viruses based on the kind of nucleic acid that makes up its genome: genome is usually organized as a single linear or circular molecule of nucleic acid. Genomes of some viruses consist of multiple molecules of nucleic acid: smallest viruses only have three genes in their genomes.
