Table of contents

1. Introduction to Microbiology3h 22m
2. Disproving Spontaneous Generation1h 18m
3. Chemical Principles of Microbiology3h 38m
4. Water1h 28m
5. Molecules of Microbiology2h 23m
6. Cell Membrane & Transport3h 28m
7. Prokaryotic Cell Structures & Functions5h 52m
8. Eukaryotic Cell Structures & Functions2h 18m
9. Microscopes2h 46m
10. Dynamics of Microbial Growth4h 36m
11. Controlling Microbial Growth4h 10m
12. Microbial Metabolism5h 16m
13. Photosynthesis2h 31m
14. DNA Replication2h 25m
15. Central Dogma & Gene Regulation7h 14m
16. Microbial Genetics4h 44m
17. Biotechnology3h 0m
18. Viruses, Viroids, & Prions4h 56m
19. Innate Immunity7h 15m
20. Adaptive Immunity7h 14m
21. Principles of Disease6h 57m

18. Viruses, Viroids, & Prions

Bacteriophage: Lytic Phage Infections

Microbiology

18. Viruses, Viroids, & Prions

Bacteriophage: Lytic Phage Infections

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Multiple Choice

Which of the following statements about the lysogenic cycle of a bacteriophage is true?

A bacteriophage in the lysogenic cycle will kill the host cell by causing cell lysis.

A bacteriophage in the lysogenic cycle can transition into the lytic cycle.

A bacteriophage in the lysogenic cycle is a productive form of viral infection.

A bacteriophage in the lysogenic cycle degrades the host cell's genome.

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Verified step by step guidance

Understand the lysogenic cycle: In the lysogenic cycle, the bacteriophage's DNA integrates into the host cell's genome and replicates along with it without causing immediate harm to the host.

Differentiate between lysogenic and lytic cycles: The lysogenic cycle is characterized by the integration of viral DNA into the host genome, whereas the lytic cycle involves the production of new phages and the lysis of the host cell.

Evaluate the statement about cell lysis: In the lysogenic cycle, the host cell is not lysed immediately. Instead, the viral DNA remains dormant until it is triggered to enter the lytic cycle.

Consider the transition to the lytic cycle: A key feature of the lysogenic cycle is that the prophage (integrated viral DNA) can be induced to enter the lytic cycle, leading to the production of new phages and cell lysis.

Assess the productivity of the lysogenic cycle: The lysogenic cycle is not considered a productive infection in terms of immediate viral replication and cell lysis, as it involves dormancy and integration into the host genome.