Chapter 4 Bio

Chapter 4 Bio - viruses can only exist if they reproduce in...

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1. Rabies is a viral infection. The rabies infection is caused by an enveloped virus. The envelope that encases the virus is made of a phospholipid bilayer. In this bilayer there are glycoproteins. The rabies virus can only infect certain types of cells, contributing to its specificity. In general, viruses are different from bacteria and other infectious organisms because they are smaller; they are acellular, meaning they are not composed of cells; and
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Unformatted text preview: viruses can only exist if they reproduce in a host cell. 2. The symptoms associated with the rabies virus are primarily neurological because of the glycoproteins in the viral envelope. These glycoproteins bind to proteins in the plasma membrane of a host’s neurons. The rabies virus can only attach to the cells with the specific protein. Therefore, only the neurons are affected by the rabies virus, resulting in neurological symptoms....
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This document was uploaded on 11/02/2011 for the course BIO 117 at Rollins.

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