Final answer:
Bacteriophages such as the T4 bacteriophage have a specific structure including a tail and head, allowing them to infect bacteria with their DNA.
Explanation:
Structure of a Bacteriophage
The T4 bacteriophage infecting Escherichia coli (E. coli) bacterium has a tail structure that facilitates attachment to host cells and a head structure housing its DNA. Bacteriophages, viruses that specifically infect bacteria, vary in complexity, with some featuring unique tail structures composed of a base plate, tail fibers, and a contractile sheath.
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