BIOLOGICAL CLASSIFICATION
VIRUSES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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walk on the surface of the host cell
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twirl and drill into the host cell
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poke holes in the cell membrane of the host
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provide support and contain protein receptors to attach to the host cell
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Detailed explanation-1: -The tail fibers (or spikes) primarily determine the host specificity (or range) and phage infection process [12–15].
Detailed explanation-2: -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.
Detailed explanation-3: -Example structure of a bacteriophage. In order to reproduce, phage must first enter the host cell. They bind to specific receptors on the bacterial cell surface with their tail fibers (adsorption) and create a hole, a process which, along with attachment, is coordinated by the base plate3.
Detailed explanation-4: -Long tail fibers consist of a phage-proximal and a phage-distal rod, each around 80 nm long and attached to each other at a slight angle. The phage-proximal rod is formed by a homo-trimer of gene product 34 (gp34) and is attached to the phage-distal rod by a monomer of gp35.