Biology 1202B Chapter Notes - Chapter 23: Retrovirus, Reverse Transcriptase, Plasmodesma
1 May 2017
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Chapter 23: viruses, viroids, and prions: infectious biological particles. Initial outbreaks in asia will allow formulation of vaccines to target these strains - people in other regions will have protection. Proteins in a virus"s coat: 1918 - a strain of influenza virus known as the spanish flu infected almost half the world"s population - killing 1 in 20 people. Characteristics of viruses: viruses are not considered to be living organisms. Diagram: bacteriophages injecting their dna into e. coli. Diagram: the infective cycle of a t-even bacteriophage, an example of a virulent phage. Series of events, from infection of the cell through the release of progeny phages from the ruptured (lysed: refers to a cell that has ruptured or undergone lysis) cell, is called the lytic cycle. Lytic cycle: the series of events from infection of one bacterial cell by a phage through the release of progeny phages from lysed cells.
