Viral Structure (1st Draft)

Viral Structure

We will understand the structure and function of Viruses

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​I will be able to identify the structural components of a Bacteriophage and a Retrovirus and describe each parts function

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​Bacteriophage

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• ​One Copy of double-stranded DNA

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• Contains the genes that control the replication of the phage​

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A DNA(Nucleic Acid)

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• ​Protective Protein Coat

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• Surrounds the viral DNA

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D Capsid (Head)

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• Connects the Head to the tail of the phage

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• Still unknown function

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B Collar (Neck)

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• Outer envelope wrapped around the tail tube

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• It contracts to inject the DNA into the host

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E Sheath (Tail)

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• Contains proteins that attach to and punctures the surface of the host

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• Where the tail fibers are attatched

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F Base Plate

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• Projections from the base plate that attach to the host's surface

• Short and long​

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C Tail Fibers

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• Where Phage DNA is injected into the host

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Tail Tube Spike

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Multiple Choice

A Bacteriophage contains ______ in the Capsid

• DNA

• RNA

• Poison

We will understand the structure and function of Viruses

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​I will be able to identify the structural components of a Bacteriophage and a Retrovirus and describe each parts function

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​Examples:​

HIV ​ Leukemia​

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Retrovirus

• 2 Single-stranded copies of RNA.

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• Will be used to make the viral DNA

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G RNA (Nucleic Acid)

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• Protective protein coat surrounds the viral RNA

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H Capsid

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• An enzyme that reverse transcribes the viral RNA to make DNA which can then be inserted into the host's DNA.

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I

Reverse Transcriptase

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• Contains Lipids and proteins that enclose the core

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• Originates from the host's plasma membrane during the budding process.

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j Lipid Envelope

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Multiple Choice

A Retrovirus contains _____ in the Capsid

• DNA

• RNA

• The Hosts DNA

We will understand the structure and function of Viruses

​

​I will be able to identify the structural components of a Bacteriophage and a Retrovirus and describe each parts function

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Open Ended

Exit Ticket:

What structure do both a Bacteriophage and a Retrovirus have?

Describe the function.