NATS 1670 Lecture Notes - Lecture 28: Microorganism, Cell Membrane
14 Jan 2016
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A virus is a piece of bad news wrapped up in a protein -in most cases this is not correct. 1. 5 percent of genome is made up of protein. 8 percent of genome is made up of viruses. Viruses are the most common cause of acute infections in humans. During the following years the virus acquired mutations to become less aggressive. Dmitri iwanowski, showed that extracts from diseased tobacco plants can transmit disease to other plants by infectious agent smaller than a bacteria. A virus is an organism with two phases: outside of the cell: the virus particle (virion, the virus inside the infected cell. Virus particles are complexes of nucleic acids and protein. Not considered life, virus particles are not cellular organisms. They cannot perform metabolism on their own outside of the cell. All cellular life has the following characteristics in common:
