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Q. No.Which chromosome in the human genome has the highest number of genes?
1. Chromosome 1
2. Chromosome 10
3. Chromosome X
4. Chromosome Y
1. Chromosome 1
2. Chromosome 10
3. Chromosome X
4. Chromosome Y
Subtopic: Human Genome Project |
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Match List-I with List-II:
Choose the correct answer from the options given below:
1. A-IV, B-III, C-I, D-II
2. A-III, B-II, C-IV, D-I
3. A-II, B-IV, C-I, D-III
4. A-IV, B-II, C-I, D-III
| List-I | List-II | ||
| A. | Alfred Hershey and Martha Chase | I. | Streptococcus pneumoniae |
| B. | Euchromation | II. | Densely packed and dark- stained |
| C. | Frederick Griffith | III. | Loosely packed and light-stained |
| D. | Heterochromatin | IV. | DNA as genetic material confirmation |
1. A-IV, B-III, C-I, D-II
2. A-III, B-II, C-IV, D-I
3. A-II, B-IV, C-I, D-III
4. A-IV, B-II, C-I, D-III
Subtopic: DNA vs RNA as Genetic Material | DNA Packaging | Search for Genetic Material |
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Which of the following are the post-transcriptional events in an eukaryotic cell?
Choose the correct answer from the options given below:
| A. | Transport of pre-mRNA to the cytoplasm prior to splicing |
| B. | Removal of introns and joining of exons. |
| C. | Addition of methyl group at 5' end of hnRNA. |
| D. | Addition of adenine residues at 3' end of hnRNA. |
| E. | Base pairing of two complementary RNAs. |
| 1. | B, C, E only | 2. | C, D, E only |
| 3. | A, B, C only | 4. | B, C, D only |
Subtopic: Transcription |
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Given below are two statements :
| Statement I : | In the RNA world, RNA is considered the first genetic material evolved to carry out essential life processes. RNA acts as a genetic material and also as a catalyst for some important biochemical reactions in living systems. Being reactive, RNA is unstable. |
| Statement II : | DNA evolved from RNA and is a more stable genetic material. Its double helical strands being complementary, resist changes by evolving repairing mechanism. |
| 1. | Statement I is correct but Statement II is incorrect |
| 2. | Statement I is incorrect but Statement II is correct |
| 3. | Both Statement I and Statement II are correct |
| 4. | Both Statement I and Statement II are incorrect |
Subtopic: RNA world |
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Given below are two statements :
In the light of the above statements, choose the most appropriate answer from the options given below:
| Statement I: | Transfer RNAs and ribosomal RNA do not interact with mRNA. |
| Statement II: | RNA interference (RNAi) takes place in all eukaryotic organisms as a method of cellular defence. |
In the light of the above statements, choose the most appropriate answer from the options given below:
| 1. | Statement I is correct but Statement II is incorrect |
| 2. | Statement I is incorrect but Statement II is correct |
| 3. | Both Statement I and Statement II are correct |
| 4. | Both Statement I and Statement II are incorrect |
Subtopic: Translation Mechanism | Transcription |
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Who proposed that the genetic code for amino acids should be made up of three nucleotides?
1. Jacque Monod
2. Franklin Stahl
3. George Gamow
4. Francis Crick
1. Jacque Monod
2. Franklin Stahl
3. George Gamow
4. Francis Crick
Subtopic: Genetic Code |
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Histones are enriched with-
1. Phenylalanine & Leucine
2. Phenylalanine & Arginine
3. Lysine & Arginine
4. Leucine & Lysine
1. Phenylalanine & Leucine
2. Phenylalanine & Arginine
3. Lysine & Arginine
4. Leucine & Lysine
Subtopic: DNA Packaging |
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Which factor is important for termination of transcription?
1. \(\rho\) (rho)
2. \(\gamma\) (gamma)
3. \(\alpha\) (alpha)
4. \(\sigma\) (sigma)
1. \(\rho\) (rho)
2. \(\gamma\) (gamma)
3. \(\alpha\) (alpha)
4. \(\sigma\) (sigma)
Subtopic: Transcription |
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A transcription unit in DNA is defined primarily by the three regions in DNA and these are with respect to upstream and downstream end:
1. Structural gene, Transposons, Operator gene
2. Inducer, Repressor, Structural gene
3. Promotor, Structural gene, Terminator
4. Repressor, Operator gene, Structural gene
1. Structural gene, Transposons, Operator gene
2. Inducer, Repressor, Structural gene
3. Promotor, Structural gene, Terminator
4. Repressor, Operator gene, Structural gene
Subtopic: Transcription: I |
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The lactose present in the growth medium of bacteria is transported to the cell by the action of:
1. Acetylase
2. Permease
3. Polymerase
4. Beta-galactosidase
1. Acetylase
2. Permease
3. Polymerase
4. Beta-galactosidase
Subtopic: Gene Regulation: Lac Operon |
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