Nucleic Acids - Mock Test 5

Question 41

Using written convention which one of the following sequences is complimentary to TGGCAGCCT?

A) ACCGTCGGA B) ACCGUCGGA C) AGGCTGCCA D) TGGCTCGGA

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Question 42

Which one of the following binds to specific nucleotide sequences that are upstream and most distant from the start site?

A) RNA polymerase B) Repressor C) Inducer D) Restriction

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Question 43

In the biosynthesis of c-DNA, the joining enzyme ligase requires?

A) GTP B) ATP C) CTP D) UTP

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Question 44

The ‘rho’ (ρ) factor is involved?

A) To increase the rate of RNA synthesis B) In binding catabolite repressor to the promoter region C) In proper termination of transcription D) To allow proper initiation of transcriptide

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Question 45

Elongation of a peptide chain involves all the following except?

A) mRNA B) GTP C) Formyl-Met-tRNA D) Tu, TS and G factors

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Question 46

Translation results in the formation of?

A) mRNA B) tRNA C) rRNA D) A protein molecule

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Question 47

How many high-energy phosphate bond equivalents are required for amino acid activation in protein synthesis?

A) One B) Two C) Three D) Four

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Question 48

Amanitin the mushroom poison inhibits?

A) Glycoprotein synthesis B) ATP synthesis C) DNA synthesis D) mRNA synthesis

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Question 49

In E. coli the chain initiating amino acid in protein synthesis is?

A) N-formyl methionine B) Methionine C) Serine D) Cysteine

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Question 50

The binding of prokaryotic DNA dependent RNA polymerase to promoter sits of genes is inhibited by the antibiotic?

A) Streptomycin B) Rifamcin C) Aueromycin D) Puromycin

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