Nucleic Acids - Mock Test 32

Question 311

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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Question 312

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 added at 5′ end D) Some bases are methylated

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Question 313

Introns in genes?

A) Encode the amino acids which are removed during post-translational modification B) Encode signal sequences which are removed before secretion of the proteins C) Are the non-coding sequences which are not translated D) Are the sequences that intervene between two genes

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Question 314

DNA contains some palindromic sequences which?

A) Mark the site for the formation of replication forks B) Direct DNA polymerase to turn back to replicate the other strand C) Are recognized by restriction enzymes D) Are found only in bacterial DNA

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Question 315

Actinomycin D binds to?

A) Double stranded DNA B) Single stranded DNA C) Single stranded RNA D) DNA-RNA hybrid

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Question 316

Rifampicin inhibits?

A) Unwinding of DNA B) Initiation of replication C) Initiation of translation D) Initiation of transcription

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Question 317

Ciprofloxacin inhibits?

A) DNA topisomerase II B) DNA polymerase I C) DNA polymerase III D) DNA gyrase

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Question 318

Ciprofloxacin inhibits the synthesis of?

A) DNA B) mRNA C) tRNA D) rRNA

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Question 319

Novobicin inhibits the synthesis of?

A) DNA B) mRNA C) tRNA D) rRNA

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Question 320

The mammalian DNA polymerase involved in error correction is?

A) DNA polymerase α B) DNA polymerase β C) DNA polymerase γ D) DNA polymerase δ

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