Question

UV light radiation cause

• A. Formation of pyrimidines
• B. Photodynamic action
• C. Breakage of hydrogen bonds in DNA
• D. Protein denaturation

Answer 1

Answer: (C)

Breakage of hydrogen bonds in DNA

The UV radiations can cause mutation in the cells by altering the DNA. These are ionising radiations which can damage the structure of the DNA molecule. The UV rays can result in the formation of thymine dimers or split the hydrogen bonding. This results in distortion in the structure of DNA and the cell dies due to malfunctioning of the genetic material.

Thus, the correct answer is option C.