What initiation and termination factors are involved in transcription in prokaryotes?

1. σ and ρ, respectively

2. α and β, respectively

3. β and γ, respectively

4. α and σ, respectively

Subtopic:  Transcription: III | Transcription |
 90%
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In the process of transcription in Eukaryotes, the RNA polymerase I transcribe -

1. mRNA with additional processing, capping and tailing

2. tRNA, 5 S rRNA and snRNAs

3. rRNAs - 28 S, 18 S and 5.8 S

4. Precursor of mRNA, hnRNA

Subtopic:  Transcription: IV | Transcription |
 85%
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Which scientist experimentally proved that DNA is the sole genetic material in bacteriophage?

1. Beadle and Tatum

2. Messelson and Stahl

3. Hershey and Chase

4. Jacob and Monod

Subtopic:  Search for Genetic Material:I | Search for Genetic Material |
 82%
From NCERT
NEET - 2019
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From the following, identify the correct combination of salient features of the Genetic Code:

1. Universal, Non-ambiguous, Overlapping

2. Degenerate, Overlapping, Commaless

3. Universal, Ambiguous, Degenerate

4. Degenerate, Non-overlapping, Non-ambiguous

Subtopic:  Genetic Code: I | Genetic Code |
 59%
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Match the following RNA polymerases with their transcribed products:

Column-I

Column-II

(a)

RNA polymerase I

(i)

tRNA

(b)

RNA polymerase II

(ii)

rRNA

(c)

RNA polymerase III

(iii)

hnRNA


Select the correct option from the following:

Options: (a) (b) (c)
1. i iii ii
2. i ii iii
3. ii iii i
4. iii ii i

Subtopic:  Transcription: I | Transcription |
 81%
From NCERT
NEET - 2019
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What will be the sequence of mRNA produced by the following stretch of DNA?

3' ATGCATGCATGCATG 5' TEMPLATE STRAND

5' TACGTACGTACGTAC 3' CODING STRAND

1. 3' AUGCAUGCAUGCAUG 5'

2. 5' UACGUACGUACGUAC 3'

3. 3' UACGUACGUACGUAC 5'

4. 5' AUGCAUGCAUGCAUG 3'

Subtopic:  DNA Double Helix |
 71%
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Production of human protein in bacterial genetic engineering is possible because           
1. Human chromosome replicate bacterial cell
2. Mechanism of gene regulation is identical in humans and bacteria
3. Bacterial cell can undertake RNA splicing
4. Genetic code is universal

Subtopic:  Genetic Code |
 80%
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A mutation at a gene locus changes a character due to change in
1. DNA replication
2. Protein synthesis pattern
3. RNA transcription pattern
4. Protein structure

Subtopic:  Mutations and Genetic Code |
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Length of one turn of the helix in a B-form DNA is approximately 
1. 3.4 nm
2. 2 nm
3. 0.34 nm
4. 20 nm

Subtopic:  The DNA | DNA Double Helix |
 74%
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The transfer RNA molecule in 3D appears 
1. L-shaped
2. E-shaped
3. V-shaped
4. S-shaped

Subtopic:  Translation |
 84%
From NCERT
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