Viral Replication
The LYSOGENIC CYCLE
The LYTIC CYCLE
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Understanding Bacteriophage Viruses: The Lytic and Lysogenic Cycles, Exercises of Genetics
An overview of bacteriophage viruses and their replication cycles, specifically focusing on the lytic and lysogenic cycles. Students will learn about the types of cells attacked by bacteriophages, the steps of each cycle, and the differences between them. Diagrams are included for visual aid.
Typology: Exercises
2021/2022
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Viral Replication
The LYSOGENIC CYCLE
The LYTIC CYCLE
Viral Reproduction – Follow-up Questions
- What kinds of cells do bacteriophage viruses attack?
- On your diagram, briefly describe the steps of the lytic and lysogenic cycles in your own words.
- Label the following in your diagrams in addition to the descriptions: a. Bacteriophage b. Host cell c. Viral nucleic acid (DNA or RNA) d. Host cell DNA
- Label the prophage in your lysogenic cycle. Is the prophage harmful to the cell?
- Describe one main difference between the Lytic and Lysogenic cycles?
- a) What can cause a virus in the lysogenic cycle to enter the lytic cycle?
b) Draw an arrow on your diagrams to show where this “switch” may occur.
- Viruses reproduce by invading host cells and taking over their means of protein synthesis. DNA and RNA viruses differ in the way they accomplish this. (text 489-90) a. In what two ways might a DNA virus take over a cell?
b. In what way might an RNA virus take over a cell?