Nucleic Acids - Mock Test 30

Question 291

Hogness box is present in?

A) Prokaryotic promoters B) Eukaryotic promoters C) Both A and B D) None of these

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Question 292

Pribnow box is present in?

A) Prokaryotic promoters B) Eukaryotic promoters C) Both A and B D) None of these

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Question 293

Self-splicing can occur in?

A) Some precursors of rRNA B) Some precursors of tRNA C) hnRNA D) None of these

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Question 294

A splice some contains all the following except?

A) hnRNA B) snRNAs C) Some proteins D) Ribosome

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Question 295

The common features of introns include all the following except?

A) The base sequence begins with GU B) The base sequence ends with AG C) The terminal AG sequence is preceded by a purine rich tract of ten nucleotides D) An adenosine residue in branch site participates in splicing

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Question 296

Splice sites are present in?

A) Prokaryotic mRNA B) Eukaryotic mRNA C) Eukaryotic hnRNA D) All of these

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Question 297

Non-coding sequences in a gene are known as?

A) Cistrons B) Nonsense codons C) Introns D) Exons

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Question 298

Non-coding sequence are present in the genes of?

A) Bacteria B) Viruses C) Eukaryotes D) All of these

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Question 299

A polycistronic mRNA can be seen in?

A) Prokaryotes B) Eukaryotes C) Mitochondria D) All of these

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Question 300

All of the following statements about nonsense codons are true except?

A) They do not code for amino acids B) They act as chain termination signals C) They are identical in nuclear and mitochondrial DNA D) They have no complementary anticodons

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