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Q. No.In eukaryotes, the sequences that appear in mature or processed mRNA are called:
1.
Introns
2.
Cistrons
3.
Exons
4.
Mutons
Subtopic: Transcription: I |
86%
Level 1: 80%+
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Which radioactive isotope was used by Meselson and Stahl to label DNA in their experiment?
1. 35S
2. 15N
3. 32P
4. None
1. 35S
2. 15N
3. 32P
4. None
Subtopic: DNA Replication |
Level 3: 35%-60%
Hints
Which of the following acts as the substrate and provides energy for DNA replication?
| 1. | Dideoxyribonucleoside triphospahtes |
| 2. | Ribonucleoside triphosphates |
| 3. | Deoxyribonucleoside triphospahtes |
| 4. | Deoxyribonucleotide triphosphates |
Subtopic: DNA Replication: I |
64%
Level 2: 60%+
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Subtopic: Genetic Code: I | Genetic Code: II | Genetic Code: III |
90%
Level 1: 80%+
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A segment of DNA coding for a polypeptide is most accurately defined as:
| 1. | Operon | 2. | Gene |
| 3. | Recon | 4. | Cistron |
Subtopic: Transcription |
76%
Level 2: 60%+
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The central dogma of molecular biology was proposed by:
| 1. | Francis Crick | 2. | James Watson |
| 3. | Rosalind Franklin | 4. | Erwin Chargaff |
Subtopic: DNA Double Helix |
91%
Level 1: 80%+
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The unequivocal proof that DNA is the genetic material was provided by:
| 1. | Avery, Macleod, and McCarty |
| 2. | Hershey and Chase |
| 3. | Meselson and Stahl |
| 4. | Watson and Crick |
Subtopic: Search for Genetic Material |
87%
Level 1: 80%+
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Hershey and Chase proved DNA as the genetic material in their experiment because :
| 1. | Bacteria that were infected with viruses that had radioactive proteins were not radioactive. |
| 2. | Bacteria that were infected with viruses that had radioactive DNA were radioactive. |
| 3. | Both 1 and 2 are correct. |
| 4. | Both 1 and 2 are incorrect. |
Subtopic: Search for Genetic Material |
Level 3: 35%-60%
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DNA replication is correctly described as:
| 1. | Semi-conservative and Continuous |
| 2. | Semi-conservative and Discontinuous |
| 3. | Conservative and Continuous |
| 4. | Semi-conservative and Semi-discontinuous |
Subtopic: DNA Replication |
58%
Level 3: 35%-60%
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Which of the following acts as a ribozyme for peptide bond formation in bacteria?
1. 5s rRNA
2. 23s rRNA
3. 16s rRNA
4. 5.1s rRNA
1. 5s rRNA
2. 23s rRNA
3. 16s rRNA
4. 5.1s rRNA
Subtopic: Translation |
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