Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsMultiple Choice Questions

91.

The usual source of restriction endonucleases used in gene cloning is from

  • fungi

  • bacteria

  • plants

  • viruses


92.

DNA fragments generated by the restriction endonucleases in a chemical reaction can be separated by

  • centrifugation

  • polymerase chain reaction

  • electrophoresis

  • restriction mapping


93.

The colonies of recombinant bacteria appear white in contrast to blue colonies of non-recombinant bacteria because of

  • Non-recombinant bacteria containing β-galactosidase

  • lnsertional inactivation of α-galactosidase in non-recombinant bacteria

  • lnsertional inactivation of α-galactosidase in recombinant bacteria

  • Inactivation of glycosidase enzyme in recombinant bacteria


94.

During gene cloning, the enzyme used to join the insert DNA with the plasmid vector is

  • DNA ligase

  • restriction endonuclease

  • alkaline phosphatase

  • exonuclease


Advertisement
95.

The structure of E. coli chromosomal DNA is

  • double- stranded, right handed and circular

  • single- stranded, right handed and circular

  • double- stranded, left handed and linea

  • double- stranded, left handed and circular


96.

Passage cells help in

  • transport of water towards pericycle

  • transport of water towards epiblema

  • absorption of water from soil

  • passage of CO2 towards stomata


97.

The sequence given below 5'-GGCC-3' is recognition sequence for which of the following enzyme

  • Not 1

  • Eco R1

  • Hae III

  • Puv I


98.

Paul berg's gene splicing experiment created the first rDNA molecule, which was a

  • T4 phage fragment incorporated into SV40 vector

  • Lambda phage fragment incorporated into SV40 vector

  • T4 phage fragment incorporated into pSC 101 vector

  • Lambda phage fragment incorporated into pSC 101 vector


Advertisement
99.

Viral genome incorporated into host DNA is called

  • prophase

  • plasmid

  • prophage

  • bacteriophage


100.

Recognition sequence in Eco RI is

  • GGCC

  • GAATTC

  • AAGCTT

  • CTGCAG


Advertisement