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Q. No.Subtopic: DNA Replication | Transcription |
90%
Level 1: 80%+
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If E. coli is growth in the absence of lactose, it will stop the synthesis of
1. Ribonuclease
2. \(\beta\)-lactamase
3. \(\beta\)-galactosidase
4. Pyruvate kinase
1. Ribonuclease
2. \(\beta\)-lactamase
3. \(\beta\)-galactosidase
4. Pyruvate kinase
Subtopic: Gene Regulation: Lac Operon |
92%
Level 1: 80%+
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Match List I with List II
Choose the correct answer from the options given below:
1. A-IV, B-I, C-III, D-I
2. A-III, B-II, C-IV, D-I
3. A-III, B-II, C-I, D-IV
4. A-III, B-I, C-IV, D-II
| List I | List II |
| A. Fredrich Miescher | I. Used X-ray analysis to investigate DNA structure |
| B. Rosalind Franklin | II. Provided experiment evidence of semiconservative DNA replication |
| C. James Watson | III. Discovered DNA |
| D. Mathew Meselson | IV. Elucidated 3-dimensional double helix DNA structure |
1. A-IV, B-I, C-III, D-I
2. A-III, B-II, C-IV, D-I
3. A-III, B-II, C-I, D-IV
4. A-III, B-I, C-IV, D-II
Subtopic: Genetic Code |
Level 4: Below 35%
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E.coli growing in a medium containing radioactive thymidine was allowed to grow in normal medium (without radioactive thymidine) for two generations. What percentage of bacteria will have radioactive DNA strand?
1. 100%
2. 50%
3. 25%
4. 12.5%
1. 100%
2. 50%
3. 25%
4. 12.5%
Subtopic: DNA Replication |
71%
Level 2: 60%+
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The sequence of a DNA strand is 3'TTCGCATG 5'. The sequence of the complementary strand will be
1. 5'AAGCGTAC 3'
2. 5'CATGCGAA 3'
3. 5'CATGCGAA 3'
4. 3'CATGCGAA 5'
1. 5'AAGCGTAC 3'
2. 5'CATGCGAA 3'
3. 5'CATGCGAA 3'
4. 3'CATGCGAA 5'
Subtopic: DNA Replication |
90%
Level 1: 80%+
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Post-transcriptional modifications in eukaryotes include
1. Polyadenylation, capping, coding
2. Capping, splicing, coding
3. Coding, splicing, polyadenylation
4. Capping, splicing, polyadenylation
1. Polyadenylation, capping, coding
2. Capping, splicing, coding
3. Coding, splicing, polyadenylation
4. Capping, splicing, polyadenylation
Subtopic: Transcription |
75%
Level 2: 60%+
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Which of the following is required as inducer(s) for the expression of Lac operon?
1. Galactose
2. Lactose
3. Lactose and galactose
4. Glucose
1. Galactose
2. Lactose
3. Lactose and galactose
4. Glucose
Subtopic: Gene Regulation: Lac Operon |
90%
Level 1: 80%+
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Which of the following is the main enzyme required for transcription?
1. DNA dependent DNA polymerase
2. DNA dependent RNA polymerase
3. RNA dependent RNA polymerase
4. RNA dependent DNA polymerase
1. DNA dependent DNA polymerase
2. DNA dependent RNA polymerase
3. RNA dependent RNA polymerase
4. RNA dependent DNA polymerase
Subtopic: Transcription |
85%
Level 1: 80%+
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In lac operon, z gene codes for :
1. \(\beta -\)galactosidase
2. Permease
3. Repressor
4. Transacetylase
1. \(\beta -\)galactosidase
2. Permease
3. Repressor
4. Transacetylase
Subtopic: Gene Regulation: Lac Operon |
91%
Level 1: 80%+
NEET - 2022
Hints
Match List-I with List- II
Choose the correct answer from the options given below:
| List-I | List-II | ||
| (a) | In lac operon i gene codes for | (i) | transacetylase |
| (b) | In lac operon z gene codes for | (ii) | permease |
| (c) | In lac operon y gene codes for | (iii) | \(\beta-\)galactosidase |
| (d) | In lac operon a gene codes for | (iv) | Repressor |
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (ii) | (i) | (iv) |
| 2. | (iv) | (iii) | (ii) | (i) |
| 3. | (iv) | (i) | (iii) | (ii) |
| 4. | (iii) | (i) | (iv) | (ii) |
Subtopic: Gene Regulation: Lac Operon |
92%
Level 1: 80%+
NEET - 2022
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