NEET BIOLOGY

BIOTECHNOLOGY

APPLICATIONS OF BIOTECHNOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is a plasmid?
A
a section of the human genome
B
a material that cuts DNA
C
viral DNA
D
an accessory piece of DNA found in bacteria
Explanation: 

Detailed explanation-1: -Definition. A plasmid is a small circular DNA molecule found in bacteria and some other microscopic organisms. Plasmids are physically separate from chromosomal DNA and replicate independently.

Detailed explanation-2: -A plasmid is a small, circular, double-stranded DNA molecule that is distinct from a cell’s chromosomal DNA. Plasmids naturally exist in bacterial cells, and they also occur in some eukaryotes. Often, the genes carried in plasmids provide bacteria with genetic advantages, such as antibiotic resistance.

Detailed explanation-3: -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.

Detailed explanation-4: -Plasmid refers to the separated DNA molecule from chromosomal DNA, which has the ability to replicate on its own. Plasmids are known to be small, circular molecules of DNA that have the ability to replicate independently, as they do not depend on the organism’s chromosomal DNA for replication.

Detailed explanation-5: -Plasmids are extrachromosomal DNA, mostly present in bacteria. They replicate autonomously. The size varies from a few base pairs to thousands bp. Many antibiotic resistance genes are present in plasmids. They are widely used in genetic engineering for manipulating and transferring genes.

There is 1 question to complete.