Nucleic Acids - Mock Test 9

Question 81

Which one of the following causes frame shift mutation?

A) Transition B) Transversion C) Deletion D) Substitution of purine to pyrimidine

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Question 82

Which one of the following statements correctly describes eukaryotic DNA?

A) They involve release of pyrophosphate from each nucleotide precussor and Mg2+ B) The direction of synthesis is C) They require a primer 5’→ 3’ D) None of these

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Question 83

Template-directed DNA synthesis occurs in all the following except?

A) The replication fork B) Polymerase chain reaction C) Growth of RNA tumor viruses D) Expression of oneogenes

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Question 84

The mechanism of synthesis of DNA and RNA are similar in all the following ways except?

A) They involve release of pyrophosphate from each nucleotide added B) They require activated nucleotide precursor and Mg2+ C) The direction of synthesis is 5’ → 3’ D) They require a primer

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Question 85

Ribosomes similar to those of bacterial found in?

A) Plant nucei B) Cardiac muscle cytoplasm C) Liver endoplasmic reticulum D) Neuronal cytoplasm

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Question 86

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

A) ACC GTC GGA B) ACC GUC GGA C) AGG CTG CCA D) TGG CTC GGA

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Question 87

Which one of the following binds to specific nucleotide sequences?

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

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Question 88

Sulphur is not present in?

A) Thiamine B) Lipic acid C) Thymine D) Biotin

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Question 89

Restriction enzymes have been found in?

A) Humans B) Birds C) Bacteria D) Bacteriophase

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Question 90

cAMD is destroyed by?

A) Adenylate cyclase B) Phosphodiesterase C) Synthetase phosphatase D) Synthetase kinase

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