9 Questions
What is the nature of plasmids?
Circular double-stranded extrachromosomal DNA molecules
What are episomes?
Plasmids integrated with bacterial chromosomes
What are the two types of transmissible plasmids based on their transmissibility?
Conjugative and nonconjugative
What are the two types of transmissible plasmids based on their transmissibility?
The two types are transmissible (conjugative) plasmids and nontransmissible plasmids.
What is the characteristic of nontransmissible plasmids?
They cannot be transferred from cell to cell
What is the function of plasmids in bacterial cells?
Plasmids encode traits that are not essential for bacterial viability and are capable of replicating independently of the bacterial chromosomes.
What are episomes in the context of plasmids?
Episomes are plasmids that are integrated with bacterial chromosomes.
What are the characteristics of nontransmissible plasmids?
Nontransmissible plasmids cannot be transferred from cell to cell because they do not contain the transfer genes. They are small, usually non-conjugative, and have high copy numbers.
What is the significance of the transmissible (conjugative) plasmids?
Transmissible plasmids can be transferred from cell to cell by conjugation and contain genes responsible for synthesis of the sex pilus and enzymes required for their transfer.
Test your knowledge about plasmids, extrachromosomal DNA molecules in bacteria that encode non-essential traits and can replicate independently. Learn about the types and characteristics of plasmids.
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