Viruses: The Kingdom That Isn

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Viruses The Kingdom That Isnt

• By
• Theodore DeForest Lloyd Trautman Graham William
  Jenkins I
• Samuel Montgomery Berman, esq.

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Viruses A Brief Introduction

• Viruses are not alive. They are not made up of
  cells, and do not perform any life functions such
  as respiration and reproduction.
• They dont belong to any of the five kingdoms of
  life.

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Structure

• Shown to the left is a typical virus. It has an
  inner core with the genetic material inside.
  Surrounding the genetic material is a shell known
  as the capsid. Together, the DNA and capsid form
  a nucleocapsid. Occasionally, there is a 3rd
  shell known as the envelope which protects the
  virus a little more. The spikes let the virus
  bond to a cells receptor sites.

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Feeding
Viruses do not have to feed and take in energy.
They are not living organisms, and do not perform
cellular respiration
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Replication

• Viruses do not reproduce. They are not living
  things. Viruses replicate instead.

1. The antigens on the spikes of the virus match up
   with a cells receptor site, after sending a
   message and making the cell believe that the
   virus is not an invader.
2. The virus inserts its genetic material into the
   cell.
3. The DNA replicates and is assembled by the
   nucleus.
4. Finally, the assembled viruses break free, ready
   to wreak havoc upon the civilized world.

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Different Viruses

• Viruses are classified by their shape.
• There are Icosahedral, Helical and Bacteriophage
  viruses
• Examples of these viruses are in the photo
  gallery.

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Virus Gallery
The HIV virus. HIV is an example of an
Icosahedral virus.
A typical bacteriophage.
Rabies is another type of helical virus.
The Influenza Virus is an excellent example of a
helical virus.
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Virus Gallery IICGI Viruses
MVM Parovirus
Polio
Foot-and-Mouth Disease
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The End
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Teacher Notes
This slide show contains good information