Jspriggs_Module4_072817.docx - Module 04 Homework...

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Module 04 Homework Assignment Use the information presented in the module folder along with your readings from the textbook to answer the following questions. 1. Describe the different morphological types of viruses and give examples of each type: a. Helical: With a helical capsid, the capsid is rod shaped or cylindrical and the genome fits inside the length of the rod shaped or cylindrical shaped capsid [Ope16]. An example of a helical capsid virus would be the Ebola virus [Ope16]. b. Icosahedral: An icosahedral capsid resembles a soccer ball with three dimensions and is a 20 sided structure with 12 vertices and appears spherical [Ope16]. AN example of an icosahedral capsid would be the poliovirus or rhinovirus [Ope16]. c. Complex: A complex capsid may have features of both helical and polyhedral viruses [Ope16]. With a complex form the genome is found inside the head of the polyhedral and then the sheath connects the head to the tail pins and fibers[Ope16]. The tail pin and fibers help the virus attach itself to receptors found the cell surface of the host[Ope16]. An example of a complex form would be the poxvirus [Ope16] 2. Compare and contrast the multiplication of bacteriophages versus the multiplication of animal viruses: The multiplication of animal viruses include the following stages. Attachment, this is where the virus becomes attached to the targeted epithelial cell [Ope16]. Penetration, this is where the virus is
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