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Q. No.Subtopic: Transcription: I |
88%
Level 1: 80%+
Hints
The discontinuously synthesized DNA fragments are later joined by:
| 1. | DNA helicase | 2. | Topoisomerase |
| 3. | DNA ligase | 4. | DNA polymerase |
Subtopic: DNA Replication |
94%
Level 1: 80%+
Hints
If E.coli was allowed to grow for 80 minutes after transfer from 15N to 14N medium, the number of hybrid density DNA molecules would be:
| 1. | 2 | 2. | 16 |
| 3. | 14 | 4. | 8 |
Subtopic: DNA Replication |
64%
Level 2: 60%+
Hints
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%+
Hints
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%+
Hints
Subtopic: Genetic Code: I | Genetic Code: II | Genetic Code: III |
90%
Level 1: 80%+
Hints
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%+
Hints
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%+
Hints
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%+
Hints
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