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Q. No.Subtopic: Genetic Code: I | Genetic Code: II | Genetic Code: III |
90%
From NCERT
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A segment of DNA coding for a polypeptide is most accurately defined as:
| 1. | Operon | 2. | Gene |
| 3. | Recon | 4. | Cistron |
Subtopic: Transcription |
74%
From NCERT
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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%
From NCERT
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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 |
86%
From NCERT
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Hershey and Chase proved DNA as the genetic material in their experiment because :
| 1. | Bacteria that were infected with viruses that had radioactive proteins were not radioactive. |
| 2. | Bacteria that were infected with viruses that had radioactive DNA were radioactive. |
| 3. | Both 1 and 2 are correct. |
| 4. | Both 1 and 2 are incorrect. |
Subtopic: Search for Genetic Material |
From NCERT
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DNA replication is correctly described as:
| 1. | Semi-conservative and Continuous |
| 2. | Semi-conservative and Discontinuous |
| 3. | Conservative and Continuous |
| 4. | Semi-conservative and Semi-discontinuous |
Subtopic: DNA Replication |
58%
From NCERT
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According to Erwin Chargaff, in a double-stranded DNA
| 1. | The ratios between Adenine and Thymine, and, Guanine and Cytosine are constant and equal. |
| 2. | The ratios between Adenine and Thymine, and, Guanine and Cytosine are constant but are not equal to one. |
| 3. | The ratios between Adenine and Guanine, and, Thymine and Cytosine are constant and equal. |
| 4. | The ratios between Adenine and Guanine, and, Thymine and Cytosine are constant but are not equal to one. |
Subtopic: DNA Double Helix |
73%
From NCERT
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The backbone of a polynucleotide chain is made of:
| 1. | Sugar and nitrogenous bases |
| 2. | Phosphate and nitrogenous bases |
| 3. | Sugar and phosphate |
| 4. | Sugar, phosphate, and nitrogenous bases |
Subtopic: The DNA | DNA Double Helix |
80%
From NCERT
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Which of the following acts as a ribozyme for peptide bond formation in bacteria?
| 1. | 5s rRNA | 2. | 23s rRNA |
| 3. | 16s rRNA | 4. | 5.1s rRNA |
Subtopic: Translation |
89%
From NCERT
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In actual structure, tRNA is a compact molecule that looks like a/an:
| 1. | Cloverleaf | 2. | Railroad |
| 3. | Inverted L | 4. | Alpha helix |
Subtopic: Translation |
72%
From NCERT
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