R-plasmids contain genes for antibiotic resistance and they can be transferred among bacteria. It is common for gut bacteria of humans and other animals to spread antibiotic resistance this way. It is a problem for humans because many bacteria have become resistant to multiple antibiotics.
Plasmids are autonomous DNA molecules of varying size which are localized within the cytoplasm of bacteria. There are two kinds:virulence plasmids = determines the virulence factors of the bacteriaresistance plasmids (R-plasmids) = determines the bacteria's resistance to anti-infective agents
plasmids are very useful in recombinant DNA technology because ; 1. it has own origin of replication. 2.it has some selective markers like ; Amp^r, ter^r etc. 3. it has unique recognition sequence . 4.it has specific restriction sites . 5. it is small in size because in RDT foreign DNA is inserted , if the vector is large sized then after insertion it will creat problem . but due to the small size plasmids donot creat any problem.
Protozoa do not have plasmids in nature.
plasmids that have transfer systems that allow transfer of DNA to unrelated species are called promiscuous plasmids.
No, it's vise versa. Plasmids are used in and by the prokaryotes.
Plasmids are small segments of genetic material which are passed from one bacteria to another, so plasmids are unique to bacteria, which may also be referred to as prokaryotes.
Chromosomes unlike our cell they roam freely in the cytoplasm
No. Plasmids are used for cell replication, and cannot be a fraction of something that a fraction of a cell.
plasmids are found in plant cells only