Introduction to Viruses

Open Ended

Why do biologists consider viruses to be non-living? List two reasons

Multiple Choice

Some viruses have lipid membrane that surrounds the capsid

• True

• False

Multiple Choice

All viruses have the same shape and size

• True

• False

Multiple Choice

________ are macromolecules that carry genetic information.

• Nucleic acids

• Lipids

• Viruses

Multiple Choice

Capsid is _______ .

• Virus's cytoplasm

• Virus's genetic code

• protein coat surrounding a virus

Multiple Choice

Lytic infection and Lysogenic infection are two process used by viruses to______

• replicate inside a living cell

• replicate in the air

• replicate in liquids

​1) Lytic infection.

​•Replication of viruses using a host cell to make more viruses

•The viruses then burst out of the cell.

​2) Lysogenic infection.

​•The viral nucleic acid is inserted into the host cell’s DNA.

•There it is replicated along with the host DNA without damaging the host.

•Viral DNA is then called prophage

• The prophage can exit the bacterial chromosome and enter a lytic cycle.

Multiple Choice

The viral nucleic acid is inserted into the host cell’s DNA is called _____

• Prophage

• Viral RNA

• Prophase

What are the two ways in which viruses can replicate? Answer on the next slide.

Watch this video about viral replication

• Click on the link to read about the steps of The Lytic Cycle.

• You will type in your answer in the following slide.

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What are the 5 steps of The Lytic Cycle?

• Click on the link to read about the steps of The Lysogenic Cycle.

• You will type in your answer in the following slide.

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What are the 5 steps of The Lysogenic Cycle?