They are used in the process of insertion of genes into plasmid vectors during gene cloning and protein expression experiments. Select one: a. Restriction enzymes b. Terminal Transferase c. DNA polymerase d. Ligase
Question
They are used in the process of insertion of genes into plasmid vectors during gene cloning and protein expression experiments. Select one: a. Restriction enzymes b. Terminal Transferase c. DNA polymerase d. Ligase
Solution
The correct answer is a. Restriction enzymes.
Here's why:
Step 1: Understanding the process Gene cloning and protein expression experiments often involve the insertion of genes into plasmid vectors. This is a key step in genetic engineering, allowing scientists to produce multiple copies of a specific gene or protein.
Step 2: Identifying the role of each option a. Restriction enzymes: These are proteins that cut DNA at specific sequences. They are used to open up the plasmid vector and create a space where a gene can be inserted. b. Terminal Transferase: This enzyme adds nucleotides to the ends of a DNA molecule. It is not typically involved in the process of inserting genes into plasmids. c. DNA polymerase: This enzyme synthesizes new strands of DNA. While it is crucial in DNA replication, it is not directly involved in the process of inserting genes into plasmids. d. Ligase: This enzyme joins two strands of DNA together. It is used in gene cloning to seal the inserted gene into the plasmid, but it does not insert the gene itself.
Step 3: Selecting the correct answer Based on the roles of these enzymes, the one that is used in the process of inserting genes into plasmid vectors is the restriction enzyme. Therefore, the correct answer is a. Restriction enzymes.
Similar Questions
In genetic engineering, restriction enzymes cleave the DNA at a specific site known as _____a) restrictionb) recognitionc) promoterd) sense
What are restriction nucleases used for? To cleave DNA at specific DNA sequences To synthesize double stranded DNA To join-end ligate DNA fragments To remove histones from a nucleosomes To elongate DNA at the end of the chromosomes
What is the role of a polylinker or multi-cloning site in a plasmid used for cloning in E coli?Group of answer choicesSo that the inserted gene can be expressedSo a restriction enzyme can cut the plasmid in a specific locationSo that only the E coli cells that take up the plasmid will survive.So that the plasmid is maintained in the E coli cells as they grow and divide.
WHICH OF THESE ENZYMES IS DESCRIBED HERE: These enzymes are used to recognize rotationally symmetrical sequence which is often referred as palindromic sequence. They require only Mg2+ as a cofactor and ATP is not needed for their activity, they are are widely used for mapping and reconstructing DNA in vitro because they recognize specific sites and cleave just at these sites Select one: a. Type IV restriction enzymes b. Type II restriction enzymes c. Type III restriction enzymes d. Type I restriction enzymes
Which enzyme is used to seal a gene sequence into a cloning vector A.DNA polymerase B. DNA ligase C. Helicase D. Reverse transcriptase
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