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 |
From NCERT
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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 |
 91%
From NCERT
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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 |
 89%
From NCERT
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In eukaryotes RNA polymerase II transcribes :

(1) mRNA

(2) rRNA

(3) tRNA

(4) hnRNA

Subtopic:  Transcription: IV | Transcription |
 59%
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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 |
 51%
From NCERT
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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 |
 80%
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What defines the position and presence of coding and a template strand in the transcription unit ?

(1) Structural gene

(2) Ori

(3) Terminator

(4) Promoter

Subtopic:  Transcription:II | Transcription |
From NCERT
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Which of the following is true for both transcription and DNA replication?

1. Principle of complementarity governs the processes

2. Only of the two strands act as template

3. Only a segment of both strands is involved 

4. Adenine base pairs with thymine

Subtopic:  Transcription:II | Transcription |
 75%
From NCERT
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The DNA dependent DNA polymerases catalyze:

1. Only in 3'-5' direction

2. Only in 5'-3' direction

3. In both directions

4. In neither directions

Subtopic:  DNA Replication:III | DNA Replication |
 76%
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Which of the following acts as the substrate and provide energy for DNA replication?

(1) Dideoxyribonucleoside triphosphates

(2) Ribonucleoside triphosphates

(3) Deoxyribonucleoside triphosphates

(4) Deoxyribonucleotide triphosphates

Subtopic:  DNA Replication: II | DNA Replication |
 58%
From NCERT
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