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Q. No.Consider the two statements:
I.
Ori’s sites in DNA are A-T rich.
II.
A-T base pairs have two hydrogen bonds.
1.
Both I and II are correct and II explains I
2.
Both I and II are correct but II is not a correct explanation of I
3.
I is correct and II is incorrect
4.
I is incorrect and II is correct
Subtopic: DNA Double Helix |
Level 3: 35%-60%
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During transcription, a DNA sequence is read by an RNA polymerase, which produces:
1. a complementary, antiparallel RNA strand called a primary transcript.
2. an identical, antiparallel RNA strand called a primary transcript.
3. a complementary, parallel RNA strand called a primary transcript.
4. an identical, antiparallel RNA strand called a final transcript.
1. a complementary, antiparallel RNA strand called a primary transcript.
2. an identical, antiparallel RNA strand called a primary transcript.
3. a complementary, parallel RNA strand called a primary transcript.
4. an identical, antiparallel RNA strand called a final transcript.
Subtopic: Transcription |
79%
Level 2: 60%+
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Consider the two statements:
| I. | In bacteria, translation initiation occurs as soon as the 5' end of an mRNA is synthesized, and translation and transcription are coupled. |
| II. | This is not possible in eukaryotes because transcription and translation are carried out in separate compartments of the cell |
| 1. | Both I and II are correct and II explains I |
| 2. | Both I and II are correct but II is not a correct explanation of I |
| 3. | I is correct and II is incorrect |
| 4. | I is incorrect and II is correct |
Subtopic: Transcription |
57%
Level 3: 35%-60%
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Consider the two statements:
I. Transcripts of eukaryotic genes cannot be translated by bacteria.
II. Eukaryotic genes contain introns.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. Both I and II are incorrect
I. Transcripts of eukaryotic genes cannot be translated by bacteria.
II. Eukaryotic genes contain introns.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. Both I and II are incorrect
Subtopic: Transcription |
67%
Level 2: 60%+
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In Hershey and Chase experiment:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | Radioactive sulfur-35 was used to label the DNA contained in the T2 phage |
| II: | Radioactive phosphorus-32 was used to label the protein sections of the T2 phage |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Search for Genetic Material |
76%
Level 2: 60%+
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The molecule shown in the given figure:
| I: | serve as substrate for DNA replication |
| II: | provide energy for polymerisation reaction |
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
Subtopic: DNA Replication: I |
77%
Level 2: 60%+
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| Assertion (A): | VNTRs are the basis of DNA fingerprinting by RFLP |
| Reason (R): | VNTRs are polymorphic and are inherited |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
| 3. | (A) is True but (R) is false |
| 4. | Both (A) and (R) are False |
Subtopic: DNA Fingerprinting |
73%
Level 2: 60%+
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You start with 15N15N (heavy) DNA of E.coli. After TWO generations in the 14N medium, you expect E. coli cells will contain:
| 1. | 25% 15N15N DNA, 50% 15N14N DNA, and 25% 14N14N DNA. |
| 2. | 50% 15N15N DNA and 50% 14N14N DNA. |
| 3. | 50% 15N15N DNA and 50% 15N14N DNA. |
| 4. | 50% 15N14N DNA and 50% 14N14N DNA. |
Subtopic: DNA Replication |
69%
Level 2: 60%+
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If a molecule that can act as a genetic material should be able to generate its replica, which of the following molecules can act as a genetic material?
| I. Proteins | II. DNA | III. RNA |
| 1. | Only I and II | 2. | Only I and III |
| 3. | Only II and III | 4. | I, II and III |
Subtopic: DNA vs RNA as Genetic Material |
90%
Level 1: 80%+
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The untranslated regions:
| I: | are present at only the 5’ end of the mature mRNA in eukaryotes |
| II: | are not required during translation and hence are spliced out of the mature mRNA |
| 1. | Only I is correct |
| 2. | Only II is correct |
| 3. | Both I and II are correct |
| 4. | Both I and II are incorrect |
Subtopic: Translation |
63%
Level 2: 60%+
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