Biology
Bio - Technology
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#17 Dideoxyribo nucleoside triphosphates are used to terminate DNA synthesis at different site which method involved this?
A) Maxam Gilbert's method
B) Sanger's method
C) KB mullis method
D) PCR
#18 The gene of choice can also be synthesized in the lab from mRNA, using reverse transcriptase. This DNA molecule is called
A) Complementary DNA
B) Replicative DNA
C) Synthetic DNA
D) None of these
#19 In recombinant DNA technology a plasmid vector is cleaved by
A) Modified DNA ligase
B) A heated alkaline solution
C) The same enzyme that cleave the donor DNA
D) The different enzyme other than that cleave the donor DNA
#20 A recombinant DNA molecule is produced by
A) Joining of two DNA fragment
B) Joining two or more DNA fragments
C) Joining of two DNA fragments orginating from different organisms
D) None of these
#21 Hormone pair required for a callus to differentiate
A) Auxin and Cytokinins
B) Auxin and ethylene
C) Auxin and Gibberellins
D) Auxin and Abscisic acid
#22 Part of plant used for culturing is called
A) Scion
B) Explant
C) Stock
D) Callus
#23 Which of the following plant cell will show totipotency?
A) Xylem vessels
B) Sieve tubes
C) Meristems
D) Cork cells
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