A Best Way To Crack Gorenment Job Exams

Biotechnology Objective Questions { Recombinant DNA }



15. Charged molecules are separated based on varying rates of migration through a solid matrix when subjected to an electric field. This technique is known as
A.photoreactivation
B.gel electrophoresis
C.autoradiography
D.blotting
Discuss in Forum

16. For gene probes to be useful they must
A.be large enough to contain gene-specific sequences
B.be labeled in some manner to allow detection
C.both (a) and (b)
D.none of the above
Discuss in Forum

17. A genomic library is
A.a database where the sequence of an organism's genome is stored
B.a collection of many clones possessing different DNA fragments from the same organisms bound to vectors
C.a book that describes how to isolate DNA from a particular organism
D.a place where the information of the genetic organization of organisms are kept.
Discuss in Forum

18. Which of the following enzyme is used to covalently bond foreign DNA to a vector plasmid?
A.DNA polymerase
B.Restriction endonuclease
C.DNA ligase
D.DNA helicase
Discuss in Forum

19. Bacterial cells protect their own DNA from degradation by restriction endonucleases by
A.methylating the DNA at the sites that the enzyme recognizes
B.deleting all recognition sites from the genome
C.not producing any restriction endonucleases
D.having anti restriction endonucleases
Discuss in Forum

20. Which type of restriction endonuclease cuts the DNA within the recognition site?
A.Type I
B.Type II
C.Type III
D.All of the these
Discuss in Forum

21. The piece of equipment, that introduces DNA into cells via DNA-coated microprojectiles is known as
A.laser
B.DNA probe
C.gene gun
D.inoculating needle
Discuss in Forum

Page 3 of 4

« 1 2  3  4 »