Nucleic Acids - Mock Test 22

Question 211

A radioactive isotope labeled cDNA probe is used in?

A) Southern blotting B) Northern blotting C) Both A and B D) None of these

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Question 212

A particular RNA in a mixture can be identified by?

A) Western blotting B) Eastern blotting C) Northern blotting D) Southern blotting

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Question 213

Fragments of DNA can be identified by the technique of?

A) Western blotting B) Eastern blotting C) Northern blotting D) Southern blotting

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Question 214

A plasmid is a?

A) Single stranded linear DNA B) Single stranded circular DNA C) Double stranded linear DNA D) Double stranded circular DNA

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Question 215

All of the following may be used as expression vectors except?

A) Plasmid B) Bacteriophage C) Baculovirus D) E. coli

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Question 216

In sticky ends produced by restriction endonucleases?

A) The 2 strands of DNA are joined to each other B) The DNA strands stick to the restriction endonuclease C) The ends of a double stranded fragment are overlapping D) The ends of a double stranded fragment are non overlapping

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Question 217

All of the following statements about restriction endonucleases are true except?

A) They are present in bacteria B) They act on double stranded DNA C) They recognize palindromic sequences D) They always produce sticky ends

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Question 218

Restriction endonucleases can recognise?

A) Palindromic sequences B) Chimeric DNA C) DNA-RNA hybrids D) Homopolymer sequences

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Question 219

Restriction endonucleases split?

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

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Question 220

Restriction endonucleases are present in?

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

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