If a segment of an mRNA molecule has the sequence 5’ GUACCGAUCG 3’, which of the following could have been the template DNA molecule?

(1) 3’ GCUAGCCAUG 5’

(2) 3’ GUACCGAUCG 5’

(3) 3’ CATGGCTAGC 5’

(4) 3’ CGATCGGTAC 5’

Subtopic:  Transcription:II | Transcription |
 85%
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In prokaryotes, the process of replication is catalysed by the following enzymes. Identify which of the enzymes is best coordinate with the role.

(1) Helicase

 –

Joins the ends of DNA segments

(2) DNA polymerase-I

 –

Synthesises DNA

(3) DNA polymerase-II

 –

Erases primer and fills gaps

(4) Primase

 –

Synthesises RNA primers

 

Subtopic:  DNA Replication: II | DNA Replication |
 65%
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hn-RNA undergoes two additional processing. Out of which, in one of them an unusual nucleotide (methyl guanosine triphosphate) is added to the 5’-end of hnRNA. This is known as

(1) capping

(2) tailing

(3) splicing

(4) termination

Subtopic:  Transcription: IV | Transcription |
 86%
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James Watson and Francis Crick got Nobel prize in the year

(1) 1960

(2) 1962

(3) 1959

(4) 1953

Subtopic:  DNA Double Helix |
 54%
From NCERT
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Polymerisation of which of the following produces Nucleic acids?

(1)Nucleosides

(2)Nucleotides

(3)DNA and RNA

(4)Both 1 and 2

Subtopic:  The DNA |
 69%
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Which of the following is a genetic material in most of the organisms?

(1)DNA

(2)RNA

(3)Both DNA and RNA

(4)Nucleic Acid

Subtopic:  DNA vs RNA as Genetic Material |
 89%
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Which of the following can act as genetic material?

(1)RNA only

(2)DNA only

(3)DNA but not RNA

(4)DNA and RNA

Subtopic:  The DNA | DNA vs RNA as Genetic Material |
 87%
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RNA cannot act as

(1)Adapter molecule

(2)Catalytic molecule

(3)Respiratory substrate

(4)Genetic material

Subtopic:  The DNA |
 86%
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RNA can act as

(1)Adapter molecule

(2)Catalytic molecule as well as Genetic material

(3)Structural molecule

(4)All of the above

Subtopic:  The DNA |
 94%
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How many types of nucleic acids are found in the living system?

(1)1

(2)2

(3)4

(4)3

Subtopic:  The DNA |
 81%
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