NATS 1670 Study Guide - Red Blood Cell, Cell Membrane, Smallpox
9 Jan 2015
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What viruses are not: they are not cellular organism, outside a cell are not considered to be alive. All cellular life has the following characteristics in common: dna, rna, making proteins (ribosomes makes our protein, converting chemicals to energy, reproduce by division, cell membrane, regulation, basic chemicals. Metabolic capabilities: viruses: no, totally depend on host atp and most other compounds, cells: extensive synthesis of atp, vitamins, lipids, nucleic acid, etc. Independent translation: viruses: no, cannot make t/rrna, cells: yes. Hereditary material: viruses: dna or rna; can be single or double stranded, cells: dna; always double stranded expressed into t/r/mrna. Reproduction: viruses: assembly of preformed components, cells: cell division. Size: viruses: nano meter range, cells: micro meter range, ebola virus longest virus (1. 4 micro meters, rhinovirus virus associated with runny nose (much smaller 20 nano meters, electron microscope allowed scientists to zoom in closer (able to view viruses)
