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Today more than .............restriction...

Today more than .............restriction enzymes have been isolated.

A

a) 800

B

b) 900

C

c) 1000

D

d) 870

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The correct Answer is:
B
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Restriction enzymes are

who disovered restriction enzymes ?

The first restriction endonuclease isolated was

The source of the restriction enzyme Hindll is

Explain the types of restriction enzymes.

Read the following statements and select the correct ones. (i) Same kind of sticky ends are produced when a DNA has been cut by different restriction enzymes. (ii) Exonucleases make cuts at specific positions within the DNA. (iii) Hind ll was the first restriction endonuclease to be isolated. (iv) A bacteriophage has the ability to replicate within bacterial cells by integrating its DNA with bacterial DNA. (v) Presence of more than one recognition sites for a enzyme within the vector facilitates the gene cloning.

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FULL MARKS-PRINCIPLES AND PROCESSES OF BIOTECHNOLOGY-Additional Questions (1- Mark Questios)
  1. Identify the non - fungal species used in SCP production . (i) Candi...

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  2. Select the correct restriction enzyme which breaks the phosphodiester ...

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  3. Cohesive ends are .........

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  4. Self-ligation is prevented by .......................

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  5. Observe the diagram and name A and B.

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  6. A vector should ............. (i) contain suitable marker (ii) conta...

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  7. Number of base pairs does pBR 322 plasmid contains..........

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  8. ............is the plasmid present in Agrobacterium.

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  9. puC 19 is an example for ..........

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  10. Statement 1 : YAC plasmid behaves like a yeast chromosome. Statement...

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  11. Statement 1 : Liposome are the artificial lipoprotein vesicles. Stat...

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  12. Statement 1 : DNA is a hydrophobic molecule. Statement 2 : T - DNA i...

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  13. Statement 1 : Bioventing procedure increases O2 flow to accelerate deg...

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  14. Assertion (A) : Golden rice helps to overcome childhood blindness. ...

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  15. Assertion (A) : Expression vectors are suitable for expressing foreign...

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  16. Assertion (A) : Pseudomonas putida is utilized in the production of Bi...

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  17. Assertion (A) : DMH - 11 is a transgenic mustard. Reason (R) : It is...

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  18. Green fluorescent protein (GFP) was isolated from ............

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  19. Tetracycline is obtained from..........

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  20. Today more than .............restriction enzymes have been isolated.

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