When a bacterium takes up DNA from the extracellular environment it is known as:

Question

BlackTom AI · Accepted Answer

In this question, the focus is on how bacteria acquire DNA from outside their cells.
Option 1: Transduction — this involves DNA transfer mediated by bacteriophages, not direct uptake of naked DNA from the environment, so it doesn't describe extracellular DNA uptake.
Option 2: Replication — refers to duplicating a DNA molecule inside the cell, not to acquiring DNA from the surroundings, making this choice inappropriate for the described process.
Option 3: Transformation — exactly the term used for the uptake of naked DNA from the extracellular environment by competent bacteria, enabling genetic material to be incorporated.
Option 4: Translation — a central step in gene expression where mRNA codons are read to synthesize proteins, unrelated to DNA uptake.
Option 5: Transposition — refers to the movement of transposable elements within a genome, not uptake of external DNA, so it does not fit the scenario.

When a bacterium takes up DNA from the extracellular environment it is known as:单项选择题

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