NATS 1670 Lecture Notes - Poliovirus, Herpes Simplex Virus, Poliomyelitis
Document Summary
Viruses: obligate intracellular parasites, complex cells that are made from nucleic acid and proteins, to reproduce is their only goal, they cannot perform metabolism on their own, charles darwin: it is not the strongest or smartest that survives but it is the one that is adaptable to change, natural selection of viruses focuses on its spreading capacity, not on it"s ability to cause a disease, many viral diseases can be viewed as a failure of the virus to adapt to its host, they are not cellular organism, outside a cell: are not considered to be alive because they use up the molecules and cells from our bodies. The unity of life: cell membrane: regulates the flow of nutrients that enter and waste that exit the cell, dna is the genetic material, rna translated into protein, proteins are used as enzymes which are catalysts, basic chemicals: carbohydrates, proteins, lipids, and nucleic acids.