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The plasmid:

1. helps in respiration
2. genes found inside nucleus
3. is a component of cell wall of bacteria
4. is the genetic part in addition to DNA in micro-organisms

Correct answer: is the genetic part in addition to DNA in micro-organisms

Solution

Plasmids are small, circular DNA molecules found in many microorganisms that exist separately from the main chromosomal DNA. They carry extra genes, so they are the genetic part in addition to the main DNA.

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