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The chemical knives of DNA are Or ...

The chemical knives of DNA are
Or Enzyme that cleaves nucleic acids within the polynucleootide chain is known as

A

Restriction endonucleases

B

Polymerases

C

Ligases

D

Transcriptases

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The correct Answer is:
A
Chemical knives/molecular scissors of DNA are restriction endonculeases.
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Enzyms that cleaves nucleic acids within the polynucleotide chain is known as

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A base sugar phosphate' unit in nucleic acid is known as

Statements : A. The four nucleotide bases are not necessarily present in DNA in exact equal proportions. B. The total amount of purines are equal to the toal amount of pyrimidines. C. DNA ligase enzyme act to hydrolyse or breakdown a polynucleotide chain into its component nucleotides. D. Nuclease enzymes are capable of restoring an intact DNA duplex. Of the above statements :

Nucleic acid that behave like enzymes are known as :

In simplified version of nucleic acid chain, nucleotides are joined together by

Read the following five statements (A to E) about nucleic acids and select the option with all correct statements: (A) DNA is a long polymer of deoxyribonucleotides. (B) The two chains of DNA have anti-parallel polarity. (C) The backbone in a polynucleotide chain is formed due to nitrogenous bases and phosphates. (D) DNA acts as the genetic material in most of the organisms. (E) Uracil is present in RNA at the place of cytosine.

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A2Z-BIOTECHNOLOGY: PRINCIPLES AND PROCESSES-Section D: Chapter-end Test
  1. In genetic engineering , restriction enzymes are used for cutting

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  2. Melting of DNA at 70^(@)C is due to breakdown of

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  3. Fragments of DNA formed after treatment with endonucleases are separat...

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  4. Plasmids are suitable vectors for gene cloning because they are

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  5. Identify the plasmid

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  6. Autonomously replicating circular extrachromosomal DNA is called

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  7. In recombinant DNA technology, the term vector refers to

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  8. Vector for T-DNA is

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  9. What is true of plasmid

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  10. T(1) plasmid is used for making transgenic plants. It is obtained from

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  11. Tumour inducing plasmid used in producing transgenic plants is that of

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  12. In gel electrophoresis, differential mobility of DNA depends upon

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  13. Restriction enzymes are also called

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  14. The chemical knives of DNA are Or Enzyme that cleaves nucleic ac...

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  15. Which one of the following palindromic base sequences in DNA can be ea...

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  16. The enzyme capable of cutting DNA molecule at specific sites is

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  17. Biolistic technique is used in :

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  18. The ends of DNA fragments are stickly due to

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  19. Recombinant DNA bearing ampicillin resistance gene is passed in E. col...

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  20. The most extensively used bacteria in genetic engineering is

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