The bacteriophage is adsorbed to the host cell at _ of the bacterium.
Correct answer: A. Receptor site
- A. Receptor site
- B. Cell wall
- C. Cell membrane
- D. Capsule
Explanation
The answer is "Receptor site." Explanation: Being obligate parasites, viruses require a receptor site on the host surface for attachment. The bacteriophage is adsorbed to the receptor site of the bacterium. A receptor site is a specific molecule on the surface of the bacterium that the bacteriophage can recognize and bind to. Once the bacteriophage has attached to the receptor site, it injects its DNA into the host cell. The DNA then takes over the host cell's machinery and starts to replicate itself. The replicated DNA then produces new bacteriophage particles, which are released from the host cell.
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About Biodiversity and Variety of Life
Biological classification uses taxonomic ranks, binomial nomenclature and shared characteristics to organize life into kingdoms. The major groups include prokaryotes, protists, fungi, plants and animals, with comparisons based on cell type, cell wall, nutrition, body organization, reproduction and evolutionary relationships; prokaryotes lack a membrane-bound nucleus.
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