BIOL 2100 Lecture Notes - Lecture 10: Dmitri Ivanovsky, Tobacco Mosaic Virus, Friedrich Loeffler
Document Summary
General characteristics of viruses: not considered to be living organisms because they do not have the properties of life, within a living cell (host) actively multiply. In animal plasma membrane: 2) availability within a host cell of cellular factors required for viral. The size of viruses multiplication: electron microscopy, total magnification - ~10,000,000x, high resolution. Cytopathic effect of viruses: uninfected human cervical cells; each cell has one nucleus. Infected cells (with hhv-2-virus) red cervical cell with many nuclei, filled with viruses. Examples of rna viruses: poliovirus, rabies virus. Viruses and cancer: virus that cause cancer may go unrecognized. Infection occurs but may not induce cancer: cancer may develop long after a viral infection, cancers (even those caused by virus) are not contagious (as viral diseases. A. dna oncogenic viruses: are: adenoviridae, herpesviridae, epstein-barr virus, poxviridae, papovaviride, human papillomavirus, hepadnaviridae, hepatitis b virus.
