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BiochemistryNucleic Acids

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Q51900. Replication of nuclear DNA in mammals is catalysed by

A.DNA polymerase α

B.DNA polymerase β

C.DNA polymerase γ

D.DNA polymerase III

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51901. Primase activity is present in

A.DNA polymerase II

B.DNA polymerase α

C.DNA polymerase β

D.DNA polymerase δ

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51902. The mammalian DNA polymerase involved in error correction is

A.DNA polymerase α

B.DNA polymeraseβ

C.DNA polymerase γ

D.DNA polymerase δ

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51903. Novobicin inhibits the synthesis of

A.DNA

B.mRNA

C.tRNA

D.rRNA

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51904. Ciprofloxacin inhibits the synthesis of

A.DNA

B.mRNA

C.tRNA

D.rRNA

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51905. Ciprofloxacin inhibits

A.DNA topisomerase II

B.DNA polymerase I

C.DNA polymerase III

D.DNA gyrase

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51906. Rifampicin inhibits

A.Unwinding of DNA

B.Initiation of replication

C.Initiation of translation

D.Initiation of transcription

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51907. Actinomycin D binds to

A.Double stranded DNA

B.Single stranded DNA

C.Single stranded RNA

D.DNA-RNA hybrid

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51908. DNA contains some palindromic sequences which

A.Mark the site for the formation of replication

B.Direct DNA polymerase to turn back to

C.Are recognized by restriction enzymes

D.Are found only in bacterial DNA

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MCQs in Biochemistry

BiochemistryNucleic Acids

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Q51909. Introns in genes

A.Encode the amino acids which are removed

B.Encode signal sequences which are removed

C.Are the non-coding sequences which are not

D.Are the sequences that intervene between

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MCQs in Biochemistry

BiochemistryNucleic Acids

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Q51910. All of the following statements about post-transcriptional processing of tRNA are true except

A.Introns of some tRNA precursors are removed

B.CCA is added at 3′ end

C.7-Methylguanosine triphosphate cap is

D.Some bases are methylated

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MCQs in Biochemistry

BiochemistryNucleic Acids

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Q51911. α-Amanitin inhibits

A.DNA polymerase II of prokaryotes

B.DNA polymerase α of eukaryotes

C.RNA polymerase II of eukaryotes

D.RNA-dependent DNA polymerase

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51912. Ciprofloxacin inhibits the synthesis of

A.DNA in prokaryotes

B.DNA in prokaryotes and eukaryotes

C.RNA in prokaryotes

D.RNA in prokaryotes and eukaryotes

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51913. All of the following statements about bacterial promoters are true except

A.They are smaller than eukaryotic promoters

B.They have two consensus sequences upstream

C.TATA box is the site for attachment of RNA

D.TATA box has a high melting temperature

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MCQs in Biochemistry

BiochemistryNucleic Acids

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Q51914. All of the following statements about eukaryotic promoters are true except

A.They may be located upstream or down stream

B.They have two consensus sequences

C.One consensus sequence binds RNA

D.Mutations in promoter region can decrease the

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MCQs in Biochemistry

BiochemistryNucleic Acids

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Q51915. In sanger’s method of DNA sequence determination, DNA synthesis is stopped by using

A.1′, 2′- Dideoxyribonucleoside triphosphates

B.2′, 3′- Dideoxyribonucleoside triphosphates

C.2′, 4′- Dideoxyribonucleoside triphosphates

D.2′, 5′ - Dideoxyribonucleoside triphosphates

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MCQs in Biochemistry

BiochemistryNucleic Acids

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Q51916. tRNA genes have

A.Upstream promoters

B.Downstream promoters

C.Intragenic promoters

D.No promoters

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51917. All of the following statements about tRNA are true except

A.It is synthesized as a large precursor

B.It is processed in the nucelolus

C.It has no codons or anticodons

D.Genes for rRNA are present in single copies

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MCQs in Biochemistry

BiochemistryNucleic Acids

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Q51918. Anticodons are present on

A.Coding strand of DNA

B.mRNA

C.tRNA

D.rRNA

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51919. Codons are present on

A.Non-coding strand of DNA

B.hnRNA

C.tRNA

D.None of these

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MCQs in BiochemistryNucleic Acids

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