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Q. No.During DNA replication, strand separation by breaking the H-bonds is performed by
1. DNA ligase
2. DNA polymerase
3. Helicases
4. RNA primase
71%
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Which of the following acts as substrate as well as provide energy for DNA polymerisation?
1. Ribonucleoside
2. Deoxyribonucleoside
3. Ribonucleotide
4. Deoxyribonucleoside triphosphate
1. Ribonucleoside
2. Deoxyribonucleoside
3. Ribonucleotide
4. Deoxyribonucleoside triphosphate
73%
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DNA replication is
1. Semi-conservative, continuous, unidirectional
2. Conservative, continuous
3. Semi-conservation, semi-discontinuous
4. Semi-continuous, conservative
1. Semi-conservative, continuous, unidirectional
2. Conservative, continuous
3. Semi-conservation, semi-discontinuous
4. Semi-continuous, conservative
Subtopic: DNA Replication |
87%
From NCERT
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Which of the following is a genetic RNA?
1. mRNA
2. rRNA
3. hn-RNA
4. RAN present in plant viruses
1. mRNA
2. rRNA
3. hn-RNA
4. RAN present in plant viruses
Subtopic: Transcription |
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The mRNA of prokaryotes is
1. Polycistronic
2. Momocistronic
3. Formed by splicing of hnRNA
4. Carries genetic message to DNA
1. Polycistronic
2. Momocistronic
3. Formed by splicing of hnRNA
4. Carries genetic message to DNA
Subtopic: Transcription |
84%
From NCERT
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Capping in hnRNA is catalysed by
1. Poly A polymerase
2. SnRNA
3. Guanylyl transferase
4. catalytic RNA
1. Poly A polymerase
2. SnRNA
3. Guanylyl transferase
4. catalytic RNA
Subtopic: Transcription |
67%
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Which of the following types of ribosomal RNA is not present in eukaryotic cytoplasm?
1. 18S
2. 28S
3. 5.8S
4. 16S
1. 18S
2. 28S
3. 5.8S
4. 16S
Subtopic: Transcription |
77%
From NCERT
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Subtopic: Transcription |
70%
From NCERT
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Transcription starts non-specifically in the absence of
1. Sigma factor
2. Rho factor
3. Core enzyme
4. DNA polymerase
1. Sigma factor
2. Rho factor
3. Core enzyme
4. DNA polymerase
Subtopic: Transcription |
59%
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