What are plasmids ? Describe their role ...

What are plasmids ? Describe their role in bacteria?

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Plasmid is a round double DNA chain. It replicates by itself. It is seen in cytoplasm of bacterial cell. It mainly remains separate from the chromosome.
Plasmid is a external nuclear chromosome. It is useful for information from one cell to another. It functions as antibiotic resistant and in bacterial formation.

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A plasmid :

Cannot replicate

Can replicale independently

Shows independent assortment

Lies together with chromosomes

plasmids are

ss-DNA

ds-DNA(linear)

ds -DNA (circular)

denatured DNA

What is true of plasmid ?

Found in viruses

Contains gene for vital activities

Part of nuclear chromosome

Widely used in gene transfer