BIOL 1201 Chapter : Exam 3 (Viruses)
Document Summary
Viruses first need to find a host (the cell that it will attach itself to and splurge off of) Theory of evolution: every organism strives to reproduce, even though viruses aren"t technically living, they abide by this as well. Influenza the flu: human flu, attaches to respiratory tract cells, swine flu (pigs, avian flu (birds, can kill you, recognizes digestive tract, when transferred to humans, attaches deep into respiratory system. Good: very low chances of spreading to other humans. Size comparison (from largest to smallest: eukaryotic cells (10-100 um, prokaryotic cells (0. 2-10 um, viruses (0. 05-0. 2 um) Symbiotic relationships: parasitic: one benefits at the harm of the other, commensalistic: one benefits, the other is not affected, mutualistic: both benefit. Viruses: obligate intracellular parasites: structure, genome (dna or rna, protein shell capsid, envelope (membrane) (phospholipid bilayer, envelope with glycoproteins, ex. H: protein that if you inhale influenza, virus will be used as a key to find the lock to your host cells.
