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Q. No.Which of the following statements best supports the RNA World hypothesis?
| 1. | RNA can function both as a genetic material and as a catalyst. |
| 2. | RNA is more stable than DNA. |
| 3. | DNA is the first genetic material in all organisms. |
| 4. | Proteins are responsible for the catalytic activities of RNA. |
Subtopic: Â RNA world |
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Which of the following is not a function of RNA?
| 1. | Acts as an adapter molecule in protein synthesis. |
| 2. | Serves as a structural component in ribosomes. |
| 3. | Acts as a catalyst in certain biochemical reactions. |
| 4. | Functions as a primary genetic material in all organisms. |
Subtopic: Â RNA world |
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The process of RNA splicing shows the dominance of:
1. DNA world
2. RNA world
3. Protein world
4. Microbial world
Subtopic: Â RNA world |
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Given below are two statements :
| Statement I : | In the RNA world, RNA is considered the first genetic material evolved to carry out essential life processes. RNA acts as a genetic material and also as a catalyst for some important biochemical reactions in living systems. Being reactive, RNA is unstable. |
| Statement II : | DNA evolved from RNA and is a more stable genetic material. Its double helical strands being complementary, resist changes by evolving repairing mechanism. |
| 1. | Statement I is correct but Statement II is incorrect |
| 2. | Statement I is incorrect but Statement II is correct |
| 3. | Both Statement I and Statement II are correct |
| 4. | Both Statement I and Statement II are incorrect |
Subtopic: Â RNA world |
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Level 1: 80%+
NEET - 2025
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Q. No.
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