PATHOLOGY MCQ
CELL DAMAGE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The DNA damage may be copied
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The DNA damage may shrink
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The DNA damage may be unclear
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The DNA is the same
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Detailed explanation-1: -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.
Detailed explanation-2: -Ultraviolet light may cause DNA damage, which is known as a . How might such damage affect events taking place during the synthesis phase? The damaged DNA is copied during DNA synthesis, so both new cells would have the mutation.
Detailed explanation-3: -One way ultraviolet light can harm cells is by directly damaging DNA. This is something many of us are reminded of every spring and summer-it’s the cause of sunburn! As the name suggests, direct DNA damage occurs when a photon of UV light hits DNA.