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Q. No.Subtopic: Genetic Code |
90%
From NCERT
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How many of the given statements regarding DNA double helix are correct?
1. 1
2. 2
3. 3
4. 4
| I: | Two strands have anti-parallel polarity |
| II: | Bases in two strands are linked by Hydrogen bonds |
| III: | Two chains are coiled in a left handed fashion |
| IV: | Pitch of the helix is 3.4 nm |
2. 2
3. 3
4. 4
Subtopic: DNA Double Helix |
78%
From NCERT
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How many of the given statements regarding the human genome are true?
| I: | The human genome contains 3164.7 million bp. |
| II: | The largest known human gene is dystrophin, at 2.4 million bases. |
| III: | Almost all (99.9 percent) nucleotide bases are exactly the same in all people. |
| IV: | The functions are unknown for over 50 percent of the discovered genes. |
| V: | More than 98 percent of the genome codes for proteins. |
| 1. | 2 | 2. | 3 |
| 3. | 4 | 4. | 5 |
Subtopic: Human Genome Project |
77%
From NCERT
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Which amino acid is coded for by the mRNA codon UGG?
| 1. | None; It is a stop codon | 2. | Glutamic acid |
| 3. | Valine | 4. | Tryptophan |
Subtopic: Genetic Code |
56%
From NCERT
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Consider the given two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | rRNA has a structural role in living organisms. |
| Statement II: | rRNA acts as the adapter molecule during the flow of genetic information in a cell. |
1. Statement I is correct; Statement II is correct
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Transcription |
58%
From NCERT
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| Assertion (A): | Only one of the two DNA strands serves as a template for transcription. |
| Reason (R): | The other strand is called the coding strand. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A) |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A) |
| 3. | (A) is True, (R) is False |
| 4. | (A) is False, (R) is False |
Subtopic: Transcription |
78%
From NCERT
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What facilitates the opening of the helix in order to allow continued elongation of transcription?
1. RNA polymerase
2. DNA polymerase
3. DNA helicase
4. DNA ligase
Subtopic: Transcription |
From NCERT
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Consider the following two statements:
Griffith discovered
A: DNA, and not protein, is the genetic material.
B: The process of bacterial transformation.
1. Only A is correct.
2. Only B is correct.
3. Both A and B are correct.
4. Neither A nor B are correct.
Subtopic: Search for Genetic Material |
68%
From NCERT
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Consider the following two statements:
| A: | The genetic code is degenerate. |
| B: | The genetic code is ambiguous. |
1. Only A is correct.
2. Only B is correct.
3. Both A and B are correct.
4. Both A and B are incorrect.
Subtopic: Genetic Code |
69%
From NCERT
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Consider the following two statements:
DNA is a better molecule for storage of genetic information than RNA because
1. Only A is correct.
2. Only B is correct.
3. Both A and B are correct.
4. Both A and B are incorrect.
DNA is a better molecule for storage of genetic information than RNA because
| A: | DNA is capable of making its own replica, while RNA cannot make its own replica. |
| B: | DNA is structurally more stable and chemically more inert than RNA. |
1. Only A is correct.
2. Only B is correct.
3. Both A and B are correct.
4. Both A and B are incorrect.
Subtopic: DNA vs RNA as Genetic Material |
67%
From NCERT
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