During the origin and evolution of life, key biological compounds were progressively synthesised in ocean with the help of energy obtained from
1. Lightening
2. Ultraviolet light
3. Lightening as well as ultra-violet light
4. Combustion of certain compounds
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Subtopic: Cosmic Evolution | Examples of Chemical Evolution |
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Which of the type of respiration probably arose first?
1. Aerobic as it release more energy
2. Anaerobic as it releases more energy
3. Aerobic as it is more complex
4. Anaerobic as early atmosphere contained no free from of oxygen
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Subtopic: Origin of Life |
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