A phage attaches to a bacterium and injects its DNA into the bacterial cell.
Bacteriophages – StatPearls – NCBI Bookshelf
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How does phage inject into a bacterial cell?
Generally, the infection process begins with the phage attaching to the surface of the host cell via particular host cell surface receptors. As a consequence of infection, the genetic material of the phage is injected into the cytoplasm of the bacterial cell.
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What happens when a bacteriophage infects a bacterial cell?
A bacteriophage attaches itself to a susceptible bacterium and infects the host cell. Following infection, the bacteriophage hijacks the bacterium’s cellular machinery to prevent it from producing bacterial components and instead forces the cell to produce viral components.
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What part of a bacteriophage helps it attach to the bacterial cell?
The nucleic acid of bacteriophages enters the host cell naked, leaving the capsid outside the cell. Plant and animal viruses can enter through endocytosis, in which the cell membrane surrounds and engulfs the entire virus.
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How does a phage attach to a bacterial cell?
Attachment: Proteins in the “tail” of the phage bind to a specific receptor (in this case, a sugar transporter) on the surface of the bacterial cell. Entry: The phage injects its double-stranded DNA genome into the cytoplasm of the bacterium.
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How are phages administered?
Phage therapy is typically administered topically or orally.
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What part of the bacteriophage attaches itself to the bacteria?
The tail of the bacteriophage includes the tail sheath, base plate and tail fibers, which are made of different proteins. The long tail fibers are used by the bacteriophage to attach itself to the bacterium and the virus then inserts its genetic material inside of the host cell to begin the replication process.
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What part of the attached bacteriophage enters through the host cell?
Entry. The nucleic acid of bacteriophages enters the host cell naked, leaving the capsid outside the cell. Plant and animal viruses can enter through endocytosis, in which the cell membrane surrounds and engulfs the entire virus.
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What are the parts of a bacteriophage and their functions?
The tailed phages have three major components: a capsid where the genome is packed, a tail that serves as a pipe during infection to secure transfer of genome into host cell and a special adhesive system (adsorption apparatus) at the very end of the tail that will recognise the host cell and penetrate its wall.
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When a bacteriophage infects a bacterial cell what actually enters the host cell?
During a lytic replication cycle, a phage attaches to a susceptible host bacterium, introduces its genome into the host cell cytoplasm, and utilizes the ribosomes of the host to manufacture its proteins.
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How does a phage enter a host cell?
The virus bacteriophage T4 infects the bacterium Escherichia coli using an intriguing nanoscale injection machinery that employs a contractile tail. The injection machinery is responsible for recognizing and puncturing the bacterial host and transferring the viral genome into the host during infection.
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What part of the bacteriophage gets injected into a bacterial cell?
A phage attaches to a bacterium and injects its DNA into the bacterial cell.
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