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Biotechnology : Principles And Processes

Question
CBSEENBI12002794
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Restriction endonuclease

  • cuts the DNA molecule randomly

  • cuts the DNA molecule at specific sites

  • restricts the synthesis of DNA inside the nucleus

  • synthesizes DNA

Solution

B.

cuts the DNA molecule at specific sites

Restriction endonuclease is a type of enzyme that can cleave molecules of DNA at a particular site called Restriction site having polindromic sequence. These enzymes are produced by many bacteria and protect the cell make leaving and destroying the DNA of invading viruses.  Now a days, restriction enzymes are widely used in the techniques of genetic engineering.

Some More Questions From Biotechnology : Principles and Processes Chapter

Name the soil bacterium which contain gene for production of endotoxins.

What is crown gall tumor ?

Define T-DNA.

Name a technique by which DNA fragments can be separated.

What are the different tools in Recombinant DNA technology?

Give the full form of PCR. Who developed it ?

What is the source of DNA polymerase i.e., Taq polymerase ?

Define “melting of target DNA”.

What would be the molar concentration of human DNA in a human cell ? Consult your teacher.

Do eukaryotic cells have restriction endonucleases ? Justify your answer.

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