The process of splicing in eukaryotes :

(1) is reminiscent of antiquity 

(2) represents dominance of RNA world

(3) is an indicator of the complexity of human genome

(4) is a legacy of organic evolution

Subtopic:  Transcription: IV | Transcription |
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In prokaryotes, the predominant site for control of gene expression is the  :

(1) transcription initiation 

(2) processing level

(3) transport of mRNA 

(4) translation level

Subtopic:  Transcription:II | Transcription |
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In Hershey and Chase experiment, what finding led to the conclusion that DNA is the genetic material ?

(1) The presence of radioactivity in the bacteria when 35S was used.

(2) The presence of radioactivity in the supernatant when 35S was used.

(3) The presence of radioactivity in the bacteria when 32P was used.

(4) The presence of radioactivity in the supernatant when 32P was used.

Subtopic:  Search for Genetic Material: II | Search for Genetic Material |
 69%
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Which of the following important biochemical reactions in living systems is catalyzed by a ribozyme?

1. Repair of DNA

2. Electron transport chain

3. Formation of peptide bond

4. Organization of MTOC during cell division

Subtopic:  Translation Mechanism |
 72%
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VNTR are useful in DNA profiling because they:

I. Are hypervariable

II. Are inherited

III. Synthesize constitutive enzymes

(1) I, II, III are correct

(2) I and II are correct

(3) I and III are correct

(4) II and III are correct   

Subtopic:  DNA Fingerprinting |
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Which enzyme polymerizes RNA with defined sequences in a template independent manner?

(1) Peptidyl transferase

(2) RNA polymerase

(3) Reverse transcriptase

(4) Polynucleotide phosphorylase

Subtopic:  Genetic Code: I | Genetic Code |
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The process of RNA splicing shows the dominance of :

(1) DNA world

(2) RNA world

(3) Protein world

(4) Microbial world

Subtopic:  Transcription: IV | Transcription |
 92%
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In RNA splicing :

(1) Exons are removed and introns are joined together

(2) Introns are removed and exons are joined together

(3) Cistrons are removed and introns are joined together

(4) Introns are removed and Cistrons are joined together

Subtopic:  Transcription: IV | Transcription |
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The core RNA polymerase is capable of catalyzing which steps of transcription ?

(1) Initiation only

(2) Elongation only

(3) Termination only

(4) All of these

Subtopic:  Transcription: III | Transcription |
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In most prokaryotes the transcription unit is :

(1) Mono-cistronic

(2) Poly-cistronic

(3) Multi-cistronic

(4) Uni-cistronic

Subtopic:  Transcription:II | Transcription |
 81%
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