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Biology
Posted 2 months ago
Suppose that a lytic phage infects a host cell. During the course of infection, both viral and bacterial proteins are produced. This would most likely occur...
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Answer from Sia
Posted 2 months ago
Answer
During the course of infection by a lytic phage, both viral and bacterial proteins are most likely produced before the cell lysis occurs.
Solution
a
Initial infection: After a lytic phage infects a host cell, it injects its DNA into the cell
b
Early gene expression: The phage DNA begins to express early genes, which include enzymes necessary for replication of the phage genome and proteins that can shut down the host's DNA, RNA, and protein synthesis
c
Late gene expression: As the infection progresses, late genes are expressed, which include structural proteins for new phage particles and lytic enzymes
d
Host cell machinery usage: The host cell's ribosomes, tRNAs, and other components are used to synthesize both viral and bacterial proteins until the host's resources are redirected or depleted
e
Cell lysis: Eventually, the phage lytic enzymes will cause the host cell to lyse, releasing new phage particles
Key Concept
Lytic cycle of phage infection
Explanation
During the lytic cycle, a phage takes over the host cell's machinery to produce viral components, which includes both viral and bacterial proteins, before the host cell is destroyed.

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