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Plasmids

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Questions and Answers

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?

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?

Protein synthesis

Photosynthesis

Cellular respiration

Antibiotic resistance (correct)

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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Description

Test your knowledge on plasmids - the extrachromosomal genetic elements found in Archaea, Eukarya, and Eubacteria. This quiz will cover their structure, function, and replication, as well as their importance in bacterial genetics. Sharpen your knowledge on plasmids with this quiz!