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Multiple Choice
Which of the following statements about transformation is true?
A
It requires transport of DNA by a virus.
B
It requires movement of DNA through a pilus.
C
It is a very rare phenomenon that happens by chance.
D
Although common in laboratory populations of bacteria, it does not play an important role in natural bacterial populations.
E
It can be facilitated by cell-surface proteins that recognize compatible DNA.
Verified step by step guidance
1
Understand the concept of transformation in bacteria: Transformation is a process where bacteria take up foreign DNA from their environment. This can lead to genetic changes in the bacteria.
Identify the role of cell-surface proteins: In transformation, certain bacteria have cell-surface proteins that can recognize and bind to DNA from the environment, facilitating its uptake into the cell.
Differentiate transformation from other genetic exchange processes: Unlike transduction, which involves viruses, or conjugation, which involves a pilus, transformation does not require these structures.
Consider the occurrence of transformation: While transformation is commonly observed in laboratory settings, it also occurs in natural environments, contributing to genetic diversity among bacterial populations.
Evaluate the given statements: The statement that transformation can be facilitated by cell-surface proteins that recognize compatible DNA is true, as it aligns with the biological mechanism of transformation.