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Biotechnology : Principles and Processes
Question
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Molecular scissors, which cut DNA at specific site is

  • pectinase

  • polymerase

  • restriction endonuclease

  • ligase

Answer

C.

restriction endonuclease

 A restriction enzyme or restriction endonuclease is an enzyme that cleaves DNA into fragments at or near specific recognition sites within the molecule known as restriction sites. 

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Some More Questions From Biotechnology : Principles and Processes Chapter

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.

From what you have learnt, can you tell whether enzymes are bigger or DNA is bigger in molecular size. How did you know ?