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UV rays prove lethal due to inactivation...

UV rays prove lethal due to inactivation of:
(a) Proteins, nucleic acids and pigments
(b) minerals, air and water
(c) carbohydrates, fats and vitamins
(d) water, carbon dioxide and oxygen

A

Proteins, nucleic acids and pigments

B

minerals, air and water

C

carbohydrates, fats and vitamins

D

water, carbon dioxide and oxygen.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the lethal effects of UV rays, we will analyze each option provided and determine which biomolecules are affected by UV radiation. ### Step-by-Step Solution: 1. **Understanding UV Rays**: - UV rays are a form of electromagnetic radiation that can cause damage to living organisms. They are known to interfere with various biomolecules in cells. 2. **Analyzing Option (a)**: - **Proteins**: UV rays can denature proteins by breaking the peptide bonds between amino acids, leading to loss of function. - **Nucleic Acids**: UV radiation can cause mutations in DNA by forming pyrimidine dimers, which distort the structure of DNA and disrupt its function. - **Pigments**: UV rays can also affect pigments like chlorophyll, altering their structure and function. 3. **Analyzing Option (b)**: - **Minerals, Air, and Water**: These are not biomolecules and are not directly affected by UV rays in a lethal manner. They do not undergo structural changes due to UV radiation. 4. **Analyzing Option (c)**: - **Carbohydrates, Fats, and Vitamins**: While these are important biomolecules, UV rays primarily affect proteins and nucleic acids. They do not have a significant lethal effect on carbohydrates, fats, and vitamins. 5. **Analyzing Option (d)**: - **Water, Carbon Dioxide, and Oxygen**: These are essential for life but are not directly inactivated by UV rays. They do not undergo lethal structural changes due to UV radiation. 6. **Conclusion**: - Based on the analysis, the correct answer is **(a) Proteins, nucleic acids, and pigments**. UV rays prove lethal due to the inactivation of these biomolecules by distorting their structures. ### Final Answer: (a) Proteins, nucleic acids, and pigments ---
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