EVERYDAY SCIENCE

Detailed explanation-1: -Thus, the correct answer is ‘Circular double helical DNA molecules.

Detailed explanation-2: -Plasmids are a small, circular, double-stranded DNA molecule, which is naturally found in all Bacterial cells. These plasmids are separated from chromosomal DNA and have the capability to replicate independently. Every bacterial cell has its own plasmid, which is transferred during a process of conjugation.

Detailed explanation-3: -Bacterial DNA – a circular chromosome plus plasmids This sits in the cytoplasm of the bacterial cell. In addition to the chromosome, bacteria often contain plasmids – small circular DNA molecules. Bacteria can pick up new plasmids from other bacterial cells (during conjugation) or from the environment.

Detailed explanation-4: -At their most basic level, plasmids are small circular pieces of DNA that replicate independently from the host’s chromosomal DNA. They are mainly found in bacteria, but also exist naturally in archaea and eukaryotes such as yeast and plants.