Identify the given nitrogenous base:
1. | Adenine | 2. | Guanine |
3. | Thymine | 4. | Cytosine |
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I | II | |
1. | 2’ deoxyribose | Ribose |
2. | Ribose | 2’ deoxyribose |
3. | Adenosine | Adenylic acid |
4. | α glucose | β glucose |
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The strands of the DNA double helix are:
1. | identical | 2. | coiled around each other |
3. | parallel to each other | 4. | complementary to each other |
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At each step of ascent, the helical strand of DNA turns
1. | 36 degree | 2. | 34 degree |
3. | 20 degree | 4. | 180 degree |
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The pitch of DNA helix is:
1. 0.34 nm | 2. 3.4 nm |
3. 34 nm | 4. 340 nm |
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