BIOL 3155 Lecture Notes - Lecture 1: Rickettsia, Lipid Bilayer, Rna Splicing

• School: York University
• Department: Biology
• Course: BIOL 3155
• Professor: K.Andrew White

Document Summary

First week of feb (2nd or 4th) and first week of mar. Today: chapter 1 introduction to virology: the nature of viruses, why study viruses, a brief history of virology, detection and measurement of viruses, virus replication cycle (next week) Viruses particles break down and release their genomes inside the cell virus replication is distinct form cellular replication. Daughter cells cell - reuses initial material virus - all new material no reuse disassembly essential to allow access to ribosomes. Virus genomes: may be either dna or rna (but not both, rna genomes are unique to viruses storage form of genetic material is rna (won"t find that in cells) Linear or circular: dna or rna comes in different forms: single stranded (ss) or double stranded (ds, genome size range from ~2kb to ~1200kb, number of viral proteins can vary (2 to >1200 proteins) Infects all forms of life: all the kingdoms (eg. animals, plants, insects, humans, fungi, protozoa, )