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Q. No.All of the following are part of an operon except:
1. an operator
2. structural genes
3. an enhancer
4. a promoter
Subtopic: Gene Regulation: Lac Operon |
89%
From NCERT
NEET - 2018
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Which of the following RNA should be most abundant in an animal cell?
| 1. | t-RNA |
| 2. | m-RNA |
| 3. | mi-RNA |
| 4. | r-RNA |
Subtopic: Transcription: I |
67%
NEET - 2017
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DNA replication in bacteria occurs:
1. Within nucleolus
2. Prior to fission
3. Just before transcription
4. During S phase
Subtopic: DNA Replication:III | DNA Replication |
54%
NEET - 2017
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Subtopic: Transcription: IV | Transcription |
74%
NEET - 2017
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Which of the following is required as an inducer(s) for the expression of lac operon?
1. galactose
2. lactose
3. lactose and galactose
4. glucose
2. lactose
3. lactose and galactose
4. glucose
Subtopic: Gene Regulation: Lac Operon |
85%
From NCERT
NEET - 2016
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Subtopic: Genetic Code: I | Genetic Code |
93%
From NCERT
NEET - 2016
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Identify the correct order of organization of genetic material from largest to smallest.
1. Chromosome, gene, genome, nucleotide
2. Genome, chromosome, nucleotide, gene
3. Genome, chromosome, gene, nucleotide
4. Chromosome, genome, nucleotide, gene
Subtopic: The DNA | DNA Double Helix |
52%
From NCERT
NEET - 2015
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Satellite DNA is important because it:
| 1. | Codes for proteins are needed in the cell cycle. |
| 2. | Shows a high degree of polymorphism in the population and also the same degree of polymorphism in an individual which is inheritable from parents to children. |
| 3. | Does not code for proteins and is the same in all members of the population. |
| 4. | Codes for enzymes needed for DNA replication. |
Subtopic: DNA Fingerprinting |
90%
From NCERT
NEET - 2015
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Gene regulation governing lactose operon of E. coli that involves the lac I gene products is:
| 1. | positive and inducible because it can be induced by lactose. |
| 2. | negative and inducible because repress or protein prevents transcription. |
| 3. | negative and repressible because repress or protein prevents transcription. |
| 4. | feedback inhibition because excess of β galactosidase can switch off transcription. |
Subtopic: Gene Regulation: Lac Operon |
53%
NEET - 2015
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Which one of the following is wrongly matched?
| 1. | Transcription- Writing information from DNA to t-RNA |
| 2. | Translation- Using the information in m-RNA to make protein |
| 3. | Repressor protein- Binds to an operator to stop enzyme synthesis |
| 4. | Operon- Structural genes, operator, and promoter |
Subtopic: Transcription: I | Transcription |
71%
From NCERT
AIPMT - 2014
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