EVOLUTION
THE ORIGIN OF LIFE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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To destroy molecules
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To the formation of organic molecules
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To the formation of protocell
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To destroy protocells
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Detailed explanation-1: -UV light can excite molecules (photoexcitation), promoting electrons from the ground state to a higher energy state.
Detailed explanation-2: -Decomposition in UV Light Organic compounds decompose in ultraviolet light. The high energy light can excite electrons in the sigma bonding molecular orbitals and break carbon-carbon bonds. UV-radiation is a very small part of the solar radiation that reaches the surface of the Earth.
Detailed explanation-3: -Ultraviolet and visible (UV-visible) spectroscopy Most organic compounds are transparent to the relatively high-energy radiation that constitutes the ultraviolet (200–400 nm) and visible (400–700 nm) portion of the electromagnetic spectrum, and consequently they appear colourless in solution.
Detailed explanation-4: -However, ultraviolet light (specifically, UVB) is also responsible for the formation of vitamin D in most land vertebrates, including humans. The UV spectrum, thus, has effects both beneficial and harmful to life.
Detailed explanation-5: -The exposure of UVR, IR, and certain genotoxic chemicals may result in single as well as double DNA strand breaks. Among different types of damages, DNA double strand breaks (DSBs) are the most deleterious, since they affect both strands of DNA and can lead to the loss of genetic material.