Distinguish between the structure and function of the bacterial nucleoid and a bacterial plasmid.
The bacterial nucleoid contains the bacterial genome of DNA. The nucleoid is one long, single molecule with the two ends of the double-stranded DNA bonded to form a physical and genetic circle. The nucleoid contains teh genetic information which controls cell metabolism and inheritance. plasmids are extra chromosomal genetic units that are nonchromosomal DNA. They are similar to the nucleoid in that the two ends bond to form a physical circle. Plasmids are not essential for growth, but can assist as they code for additional proteins, e.g. antibiotic resistance.