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Questions and Answers
Which of the following is true about plasmids?
Which of the following is true about plasmids?
- They encode all functions specified by chromosomal DNA
- They are essential for bacterial survival
- They are only present in Eubacteria
- They can replicate independently from chromosomal DNA (correct)
What is the function of plasmids in bacteria?
What is the function of plasmids in bacteria?
- To provide the primary source of genetic material for the cell
- To contribute to bacterial genetic diversity and plasticity (correct)
- To direct the structure and function of the bacterial cell
- To encode all functions specified by chromosomal DNA
What is an example of a trait that can be specified by plasmids?
What is an example of a trait that can be specified by plasmids?
- Protein synthesis
- Photosynthesis
- Cellular respiration
- Antibiotic resistance (correct)
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Study Notes
Plasmids in Bacteria
- Plasmids are small, self-replicating circular DNA molecules that are separate from the bacterial chromosome.
- The function of plasmids in bacteria is to provide genetic instructions for various beneficial traits, such as antibiotic resistance, that can be expressed by the host bacterium.
- An example of a trait that can be specified by plasmids is antibiotic resistance, allowing bacteria to survive in the presence of antibiotics that would otherwise be lethal.
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