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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