What happens to a cell according to the Direct theory of radiation injury?

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Multiple Choice

What happens to a cell according to the Direct theory of radiation injury?

Radiation injury under the Direct theory occurs when energy is deposited directly in a critical cellular target, most notably DNA. When DNA is ionized and strand breaks occur, the cell’s genetic information is compromised, and its ability to replicate or repair itself is impaired, leading to dysfunction or cell death. This immediate, direct hit to the genetic material is what the theory emphasizes. While other cellular components can be damaged, the key idea is a direct interaction with a vital target like DNA. (Indirect effects, due to free radicals from water radiolysis, contribute to damage as well, especially with low-LET radiation, but the direct theory centers on the direct hit to DNA.)

Radiation injury under the Direct theory occurs when energy is deposited directly in a critical cellular target, most notably DNA. When DNA is ionized and strand breaks occur, the cell’s genetic information is compromised, and its ability to replicate or repair itself is impaired, leading to dysfunction or cell death. This immediate, direct hit to the genetic material is what the theory emphasizes. While other cellular components can be damaged, the key idea is a direct interaction with a vital target like DNA. (Indirect effects, due to free radicals from water radiolysis, contribute to damage as well, especially with low-LET radiation, but the direct theory centers on the direct hit to DNA.)

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