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Copy of Structure and Function of Viruses and Bacteria

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Adrian Izquierdo

on 28 January 2013

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Transcript of Copy of Structure and Function of Viruses and Bacteria

Structure And Function Viruses vs. Bacteria Each of these can come in many different shapes. Bacteria and Viruses VIRUSES* Viruses are really parasites that feed off of, and cannot survive without, a host. Structure: capsid
nucleic acid core
tail sheath
tail fibers
envelope They have a very simple internal structure. They also have no membrane-bound organelles. BACTERIA* Function*: nucleoid
flagella Structure Nucleoid: where DNA is stored
Pili: hollow hair-like structures that help the bacterium attach itself to other organisms
Flagella: hair-like structures that assist with mobility Function*: Capsid: compartment made of protein that protects the DNA or RNA
Nucleic acid core: this is the RNA or DNA
Envelope: Surrounds the capsid, and helps the virus enter cells.

Neck: What connects the head to the tail.
Tail Sheath: Protects the plug of the virus.
Plug: Injects the DNA or RNA of the virus into the host cell.
Tail Fibers: Help bind the virus to the cell. HEAD TAIL
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