Which of the following statement about plasmids is true?

Plasmid DNA is like phage DNA and needs the bacterial genome for replication

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Each bacterial cell can have only one plasmid

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Conjugation is the only natural process through which plasmids can be transferred from one bacteria to another

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

All plasmids confer antibiotic resistance to the host bacteria

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C Conjugation is the only natural process through which plasmids can be transferred from one bacteria to another
Plasmids are extrachromosomal circular DNA which are capable of self replication. A bacterial cell can contain numerous small and a few larger plasmids. Conjugation is one of the natural methods through which plasmids can be transferred from one bacteria to another via a conjugation bridge, the other two methods being transformation and transduction. All plasmids do not confer antibiotic resistance.

Suggest Corrections

Similar questions

Q. Identify the correct statements from the following options.

1. Bacteria typically store their single standard DNA in a single, circular chromosome.
2. Bacterial DNA is present in nucleus.
3. Some bacteria have multiple chromosomes.
4. The DNA of bacteria is not associated with histones.
5. Bacteria don't have smaller, circular DNA molecules called plasmids.
6. E. coli contain only about 4.6 million base pairs compared to the average human chromosome's 139 million.

Q. Identify the correct statements from the following.
1. In bacteria, negatively charged DNA is held by positively charged proteins in the nucleoid region.
2. Bacterial DNA is present in the nucleus.
3. The DNA of bacteria is associated with histones.
4. Bacteria have smaller, circular DNA molecules called plasmids.

Q. The insertion of transferred DNA into the plasmid can be tested by checking for the antibody - resistance of the bacteria with the plasmid.

Q. From the below list, which of the following is the most logical sequence of steps for splicing foreign DNA into a plasmid and inserting the plasmid into a bacterium?
(i) Transformbacteria with recombinant DNA molecule.
(ii) Cut the plasmid DNA using restriction enzymes.
(iii) Extract plasmid DNA from bacterial cells.
(iv) Hydrogen-bond the plasmid DNA to nonplasmid DNA fragments.
(v) Use ligase to seal plasmid DNA to nonplasmid DNA.

Q. Which statement(s) regarding plasmids is/are incorrect?

1. Self-replicating
2. Single-stranded DNA
3. Double-stranded DNA
4. Confer antibiotic resistance
5. Part of genomic DNA

Join BYJU'S Learning Program