Class 12 Biology MCQs Chapter – 11
21. Genetic engineering is also called
(A)Recombinant DNA technique
(B) Tissue culture
(C) Cloning vector
(D ) Flow of resources
Answer-( A )
22. Which in the following is not Restriction enzyme ?
(A) EcoR1
(B) Bam H1
(C) Hind III
(D) Pectinase
Answer-( D )
23. Which one is used to observe DNA?
(A) Ethidium bromide
(B) Aniline blue
(C) Saffarine
(D) Fast green
Answer-( A )
24. Bam H1 restriction enzyme is obtained from
(A) Haemophilus influenzae
(B) E. Coli
(C) Bacillus emaloliquifaciens
(D) None
Answer-( C )
25. DNA polymerase can be obtained from-
(A) PBR 322
(B) Thermus
(C) Agrobacterium
(D) Retrovirus
Answer-( B )
26. In Eco RI of Restriction endonuclease Co represents
(A) Colon
(B) Coelom
(C) Co-enzyme
(D) Coli
Answer-( D )
27. Fungus is filtered by which enzyme?
(A) Chitinase
(B) Lysozyme
(C) Cellulose
(D) Galactose
Answer-( A )
28. “Restriction’ enzyme is used to splices which of the following ?
(A) SS-RNA
(B) ds-DNA
(C)SS-DNA
(D) ds-RNA
Answer-( B )
29. Enzyme ligase is used in
(A) Splitting of DNA
(B) Ligation of broken DNA
(C)To purify DNA
(D) To enhance production efficiency of Bioreactors.
Answer-( B )
30. Ti-plasmid is found in :
(A) Agrobacterium tumifaciens
(B) E.Coli
(C) B.coli
(D) All of these
Answer-( A )
31. Agarose is extracted from
(A) See weeds
(B) Maize
(C) Cycas
(D) None of these
Answer-( A )
32. What is true of plasmids ?
(A) They are found in viruses
(B) They are main parts of chromosomes
(C) They are widely used in gene transfer
(D) They contain genes for vital activities
Answer-( C )
33. ‘Cry gene’ prevents which crop from bolloworms ?
(A) Cotton
(B) Mango
(C) Tea
(D) Wheat
Answer-( A )
34. Bacteria has
(A) Plasmid DNA
(B) RNA
(C) Both (A) and (B)
(D) None of these
Answer-( C )
