BIO 200 Lecture Notes - Lecture 23: Smallpox, Ebola Virus Disease, Small Cell
31 Oct 2017
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They are not acellular (not cells: they aren"t alive, they can"t grow, they can"t reproduce, they can"t metabolize outside of a host cell. Test: the number of distinct viruses in stool samples ranged form 52- Nasal swabs: 10,000 vial sequence sin children with fever, without fever is 1,000. Characteristcs used to classify viruses: type of nucleic acid (dna or. Lytic life cycle: attachment: the phage attaches to the cell surface of a bacterium, penetration: phage dna enters the bacterial cell, replication: phage dna is replicated. Phage proteins are synthesized: assembly: phage components are assembled into mature viruses, release: the bacterial cell lyses and releases many phages that can then infect other cells. For every bacterium in your body there are about 100 bacteriophages. Estimated 10 billion phages packed into each gram of human stool. Phage therapy uses viruses to attack some bacterial infections.
