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Bacteria protect themselves from viruses...

Bacteria protect themselves from viruses by fragmenting viral DNA upon entry with

A

methylase

B

endonuclease

C

ligases

D

exonuclease

Text Solution

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The correct Answer is:
b
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ARIHANT NEET-BIOTECHNOLOGY : PRINCIPLES AND PROCESSES-Chapter exercises (C. Medical entrances gallery (Collection of Questions Asked in NEET & Various Medical Entrance Exams))
  1. Assertion : Restriction endonuclease recognize short palindromic. Sequ...

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  2. DNA polymerase is isolated from bacteria

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  3. Bacteria protect themselves from viruses by fragmenting viral DNA upon...

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  4. Restriction endonucleases are

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  5. Assertion : Gel electrophoresis and elution are two important processe...

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  6. The function of a selectable marker is

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  7. Which vector can clone only a small fragment of DNA ?

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  8. In insertional inactivation of beta-galactosidase gene, the bacteria i...

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  9. Identify the steps that are involved in PCR I. Denaturation II. ...

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  10. The recognition sequences of restriction enzyme 'A' is GGCC and that ...

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  11. The cloning vectors M13 has genetic material

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  12. Which of the following enzyme is used to join DNA fragments :

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  13. Restriction endonucleases are enzymes that

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  14. The introduction of T-DNA into plants involves

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  15. The DNA molecules of which the gene of interset is integrated for clon...

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  16. The cutting of DNA at specific locations became possible with the disc...

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  17. An analysis of chromosomal DNA using the southern hybridization techni...

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  18. Commonly used vectors for human genome sequencing are

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  19. The first recombinant DNA was constructed by linking an antibiotic re...

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  20. The Polymerase Chain Reaction (PCR) is technique that is used for

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