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Q. No.A typical nucleosome unit consists of about:
1.
60 base pairs
2.
140 base pairs
3.
200 base pairs
4.
400 base pairs
Subtopic: DNA Packaging |
93%
From NCERT
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At any instant, RNA is transcribed on which of the following strands of DNA?
| 1. | Coding strand | 2. | Template strand |
| 3. | Lagging strand | 4. | Leading strand |
Subtopic: Transcription: I |
83%
From NCERT
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To form a nucleoside, a nitrogenous base is linked to a pentose sugar:
| 1. | Through a P-Glycosidic linkage at carbon atom number 1 |
| 2. | Through a P-Glycosidic linkage at carbon atom number 5 |
| 3. | Through an N-Glycosidic linkage at carbon atom number 1 |
| 4. | Through an N-Glycosidic linkage at carbon atom number 5 |
Subtopic: The DNA |
76%
From NCERT
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Nucleosomes constitute the repeating subunits of a structure in the nucleus called:
| 1. | Nucleoid | 2. | Chromatid |
| 3. | Solenoid | 4. | Chromatin |
Subtopic: DNA Packaging |
73%
From NCERT
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Which of the following is true for both transcription and DNA replication?
| 1. | The principle of complementarity governs the processes |
| 2. | Only if the two strands act as a template |
| 3. | Only a segment of both strands is involved |
| 4. | Adenine base pairs with thymine |
Subtopic: DNA Replication | Transcription |
79%
From NCERT
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The structure of the ribosome is made of:
| 1. | rRNA and Proteins |
| 2. | rRNA and Polysaccharides |
| 3. | mRNA, rRNA and tRNA |
| 4. | RNA, DNA and Proteins |
Subtopic: Translation |
81%
From NCERT
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A molecule that can act as a genetic material must fulfil all the following criteria except:
| 1. | It should be able to generate its replica |
| 2. | It should chemically and structurally be stable |
| 3. | It should provide scope for rapid mutations |
| 4. | It should be able to express itself in the form of “Mendelian Characters” |
Subtopic: Search for Genetic Material |
91%
From NCERT
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What defines a coding and a template strand in the transcription unit?
| 1. | Structural gene | 2. | Ori |
| 3. | Terminator | 4. | Promoter |
Subtopic: Transcription: I |
68%
From NCERT
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The DNA dependent 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: I |
84%
From NCERT
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DNA is structurally and chemically more stable than RNA because of the following except:
| 1. | It has thymine instead of uracil |
| 2. | 2’ –OH is absent in DNA |
| 3. | It replicates itself based on complementary base pairing |
| 4. | It does not have any catalytic role |
Subtopic: DNA vs RNA as Genetic Material |
54%
From NCERT
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