What Are Plasmids Answers?

Plasmids are extra-chromosomal DNA molecules that replicate independent of chromosomal DNA. It has its own origin of replication. It carries many genes which benefits bacteria for survival. It contains antibiotic resistance genes.

Why do we use plasmids in genetic engineering?

Plasmids are used in genetic engineering to amplify, or produce many copies of certain genes.

What is incorrect about plasmid Mcq?

14. What is incorrect about plasmid? Explanation: Plasmids are the extra genetic materials that are found in the bacterial cell along with the genetic component. They are autonomously replicating cyclic double strand DNA molecules used as vectors for gene transfer and also for replication.

What are the different types of plasmid?

5 types of plasmids are given below.

  • Resistance Plasmids.
  • Virulence Plasmids.
  • Degradative Plasmids.
  • Col Plasmids.
  • Fertility F Plasmids.

What is relaxed and stringent plasmid?

Stringent vs Relaxed plasmids

Such plasmid can replicate only when bacterial genome replicates and called as stringent. Relaxed plasmids are used as vectors for gene transfer in rDNA technology. Plasmids encode genes for specific proteins. Stringent Plasmid: Replicate only with bacterial genome replication.

What are plasmids Class 9?

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.

What is true for plasmids Mcq?

Explanation: Plasmids generally don't get incorporated in a chromosome; if it does so then it is known as episome not plasmids. It is true that plasmids are circular, double stranded, extrachromosomal DNA that can confer antibiotic resistance.

What are plasmids answers?

Plasmids are extra-chromosomal DNA molecules that replicate independent of chromosomal DNA. It has its own origin of replication. It carries many genes which benefits bacteria for survival. It contains antibiotic resistance genes.

What is relaxed plasmid?

relaxed plasmid. A plasmid that replicatesindependently of the main bacterial chromosome and is present in 10-500 copies per cell.

Which is true about plasmids Quizizz?

Plasmids can be cut at specific sequences called restriction sites. Plasmids contain a promoter sequence that defines where transcription begins. Plasmids can contain an antibiotic resistance gene. All of the statements are true about plasmids.

What is the role of ROP protein in a plasmid Mcq?

What is the role of Rop protein in a plasmid? Explanation: This protein which forms a dimer enhances the pairing between RNAI and RNAII so that processing of the primer can be inhibited even at low RNAI concentration.

Which plasmid is incorrect?

As the plasmid DNA contains only extra genes that are required in certain conditions only, the DNA of the plasmid carries shorter sequences than the chromosomal DNA. Thus, this statement is incorrect.

What is the role of plasmid?

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.

What do degradative plasmids do?

Summary. Degradative plasmids carry genes that confer on the host bacteria the ability to degrade recalcitrant organic compounds not commonly found in nature.

Where are plasmids found?


How is DNA inserted into plasmids?

The basic steps are:

  1. Cut open the plasmid and "paste" in the gene. This process relies on restriction enzymes (which cut DNA) and DNA ligase (which joins DNA).
  2. Insert the plasmid into bacteria.
  3. Grow up lots of plasmid-carrying bacteria and use them as "factories" to make the protein.

What are plasmids made of MCQ?

Plasmids are extrachromosomal DNA, mostly present in bacteria. They replicate autonomously. The size varies from a few base pairs to thousands bp.

What is TOL plasmid?

The TOL plasmid encodes enzymes for conversion of the aromatic hydrocarbons to the corresponding carboxylic acids as well as the meta-pathway enzymes. The structure of the promoter sequences in pseudomonads involved in degradation of toluene to central metabolites encompasses four main elements.

What is plasmid Slideshare?

Plasmids are small double-stranded DNA molecules, usually circular that can exist independently of host chromosomes and are present in many bacteria (they are also present in some yeasts and other fungi). • They have their own replication origins and are autonomously replicating and stably inherited .

What is a conjugative plasmid?

Conjugative plasmids are extra-chromosomal DNA elements that are capable of horizontal transmission and are found in many natural isolated bacteria. Although plasmids may carry beneficial genes to their bacterial host, they may also cause a fitness cost.

What is shuttle vector example?

A vector that can replicate in more than one host organisms or two different cell types (e.g. a prokaryotic cell and a eukaryotic cell). An example is the yeast shuttle vector that can propagate within the cells of E. coli and yeast.

Dated : 20-May-2022

Category : Education

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