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Question
The molecular action of ultraviolet light is mainly reflected through
The molecular action of ultraviolet light is mainly reflected through
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Solution
The correct option is A Destruction of hydrogen bonds in DNA
The good ozone layer is found in the upper part of the atmosphere is called as the stratosphere, and it acts as a protective layer absorbing ultraviolet radiation from the sun. UV rays are highly injurious to living organisms since DNA and proteins of living organisms preferentially absorb UV rays, and its high energy breaks the chemical bonds of hydrogen within the DNA molecules. UV-B damages DNA and mutation may occur. It causes aging of the skin, damage to skin cells and various types of skin cancers. In the human eye, cornea absorbs UV-B radiation, and a high dose of UV-B causes inflammation of the cornea, called as snow-blindness, cataract, etc. Such exposure may permanently damage the cornea. Thus, the correct answer is option A.
The good ozone layer is found in the upper part of the atmosphere is called as the stratosphere, and it acts as a protective layer absorbing ultraviolet radiation from the sun. UV rays are highly injurious to living organisms since DNA and proteins of living organisms preferentially absorb UV rays, and its high energy breaks the chemical bonds of hydrogen within the DNA molecules. UV-B damages DNA and mutation may occur. It causes aging of the skin, damage to skin cells and various types of skin cancers. In the human eye, cornea absorbs UV-B radiation, and a high dose of UV-B causes inflammation of the cornea, called as snow-blindness, cataract, etc. Such exposure may permanently damage the cornea. Thus, the correct answer is option A.
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