The bacteriophage φ × 174 has:
1. 5386 nucleotides
2. 48502 base pairs
3. 4.6 × 106 base pairs
4. 3.3 × 109 base pairs
1. 5386 nucleotides
2. 48502 base pairs
3. 4.6 × 106 base pairs
4. 3.3 × 109 base pairs
Subtopic: The DNA |
87%
Level 1: 80%+
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In eukaryotes, during post-transcriptional modification of hnRNA:
| 1. | methyl guanosine triphosphate is added to the 5’ end and adenylate residues are added at the 3‘ end |
| 2. | methyl guanosine triphosphate is added to the 3’ end and adenylate residues are added at the 5‘ end |
| 3. | methyl adenosine triphosphate is added to the 5’ end and guanylate residues are added at the 3‘ end |
| 4. | methyl adenosine triphosphate is added to the 3’ end and guanylate residues are added at the 5‘ end |
Subtopic: Transcription |
85%
Level 1: 80%+
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A gene is said to be polymorphic if it has more than one variant and the frequency of the least common variant is at least:
1. 0.01
2. 0.1
3. 0.5
4. 1.0
1. 0.01
2. 0.1
3. 0.5
4. 1.0
Subtopic: The DNA |
59%
Level 3: 35%-60%
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The sequence on the template strand of DNA which will be responsible for the insertion of the first amino acid into a protein will be:
| 1. | TAC | 2. | AUG |
| 3. | CAT | 4. | ACT |
Subtopic: Translation | Genetic Code |
Level 4: Below 35%
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Consider the two statements:
| Statement I: | In eukaryotes, RNA polymerase II transcribes hnRNA. |
| Statement II: | There is a single RNA polymerase that catalyses transcription of all types of RNA in bacteria. |
| 1. | Statement I is correct; Statement II is incorrect |
| 2. | Statement I is correct; Statement II is correct |
| 3. | Statement I is incorrect; Statement II is incorrect |
| 4. | Statement I is incorrect; Statement II is correct |
Subtopic: Transcription |
85%
Level 1: 80%+
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Subtopic: Human Genome Project |
74%
Level 2: 60%+
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What percent of the human DNA actually codes for proteins?
1. Less than 2%
2. Around 20%
3. Between 35% and 40%
4. More than 98%
1. Less than 2%
2. Around 20%
3. Between 35% and 40%
4. More than 98%
Subtopic: Human Genome Project |
94%
Level 1: 80%+
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If a sample of single stranded DNA contains 23 % adenine bases of total, what is the expected percentage of guanine bases in this sample of DNA?
| 1. | 23 |
| 2. | 27 |
| 3. | 46 |
| 4. | Cannot be determined on the basis of information given |
Subtopic: DNA Double Helix |
Level 4: Below 35%
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What argument will be most potent to discard proteins as possible molecules for genetic information storage in humans?
| 1. | They have very limited diversity |
| 2. | They are not macromolecules |
| 3. | They do not replicate |
| 4. | They are unstable biomolecules |
Subtopic: Search for Genetic Material |
83%
Level 1: 80%+
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In an E. coli cell, the enzyme permease:
| 1. | is present only when glucose levels are very low |
| 2. | is present only when lactose is freely available |
| 3. | is present in a low amount all the time |
| 4. | is not required for using lactose as a source of energy by the cell |
Subtopic: Gene Regulation: Lac Operon |
69%
Level 2: 60%+
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