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8 Cards in this Set
- Front
- Back
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Differentiate a virus from a bacterium |
Viruses are -Filterable. -Obligatory intracellular parasites requiring living host cells in order to multiple. -sensitive to interferon. Other bacteria dont share these characteristics except for, Rickettsias bacteria which are; -filterable -intracellular parasites. Bacteria are characterized by -plasma membrane -binary fission -DNA/RNA -ATP generation -Ribosomes -sensitivity to antibiotics |
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Life? |
Life can be defined as acomplex set of processes resulting from the actions of proteins specified by nucleic acids. |
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Viruses are entities that... |
-Contain a single type of nucleic acid, either DNA or RNA. -Contain a protein coat (sometimes itself enclosed by an envelope of lipids, proteins, andcarbohydrates) that surrounds the nucleic acid. -Multiply inside living cells by using the synthesizing machinery of the cell. -Cause the synthesis of specialized structures that can transfer the viral nucleic acid to other cells. |
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In order to multiply what must viruses do and why is this a problem in medicine? |
To multiply, viruses must take over the metabolic machinery of the hostcell. Mostdrugs that would interfere with viral multiplication would also interfere with the functioning of the hostcell. |
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Host Range |
the spectrum of host cells a virus can infect. most viruses are able to infectspecific types of cells of only one host species. chemical interactions between surface of the host cell and the virus must complement each other for infection. |
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phage therapy |
using viruses to kill bacterial infections in human body. oncolytic viruses only kill cancer cells or can be GMod to only kill cancer cells. |
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How could the small size of viruses have helped researchers detect viruses before the invention of theelectron microscope? |
viruses passed through filter paper that larger bacteria got caught in |
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what is the known size range of viruses? |
20-1000 nanometers |
