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Maulana Azad College of Arts, Science & commerce, , Dr. Rafiq Zakaria Campus, Rauza Baugh, 2020-21, Test 1, Class-MSc TTYR SEM -I Marks-20, , 1.The function of B subunit of polymerase is, , a. Template binding, b. Catalytic binding, c. Promoter binding, d. Cation binding, , 2. Which of the o factors is heat stable?, , a. o™, boo”, c. ow, d. o2, , 3.The mRNA codon of valine is, , a. GUC, b. UGG, c. CCA, d. TTG, , 4. True replication of DNA is due to, , a. Phosphate backbone, , b. Hydrogen bonding, , c. Complementary base pairing rule, d. None, , 5. Which of the following statements is not applicable to viruses?, , a. The virus replicates in a bacterial host, , b. The protein coat of a virus does not enter the host cell, c. The genetic material is DNA or RNA, , d. Virus replicate autonomously in the absence of host

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6. Mode of DNA replication is, , a. Conservative and bidirectional, , b. Semiconservative and unidirectional, c. Semiconservative and bidirectional, d. Conservative and unidirectional, , 7. Which enzyme is used to join nicks in the DNA strand?, , a. Primase, , b. DNA polymerase, c. DNA ligase, , d. Endonuclease, , 8. Which enzyme is used in the unwinding of DNA?, , a. Ligase, , b. Topoisomerase, c. Helicase, , d. Exonuclease, , 9. Which of the following processes does not occur in prokaryotes?, , a. Transcription, b. Splicing, , c. Translation, d. Replication, , 10. cDNA is synthesised from RNA by the enzyme, , a. DNA polymerase, b. DNA synthetase, c. DNA convertase, d. Reverse