Q. No.The central dogma of molecular biology was proposed by:
1.
Francis Crick
2.
James Watson
3.
Rosalind Franklin
4.
Erwin Chargaff
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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 |
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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. |
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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 |
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1. 5s rRNA
2. 23s rRNA
3. 16s rRNA
4. 5.1s rRNA
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Histones are:
| 1. | Positively charged and basic amino acids |
| 2. | Negatively charged and basic proteins |
| 3. | Positively charged and acidic proteins |
| 4. | Not found in bacteria |
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Which of the following anticodons will hybridize with the mRNA codon 5’ – AUG – 3’?
| 1. | 5’ – UAC – 3’ | 2. | 5’ – TAC – 3’ |
| 3. | 3’ – UAC – 5’ | 4. | 3’ – TAC – 5’ |
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Some amino acids are coded by more than one codon. Hence genetic code is:
| 1. | Unambiguous | 2. | Non-specific |
| 3. | Degenerate | 4. | Universal |
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The length of DNA in a typical mammalian cell is approximately:
1. 1.1 meter
2. 1.5 meter
3. 2.2 meter
4. 3.3 meter
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