When oxygenation increases, the cell's sensitivity to densely ionizing radiation will:

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Multiple Choice

When oxygenation increases, the cell's sensitivity to densely ionizing radiation will:

Explanation:
High-LET, or densely ionizing, radiation causes most damage directly along its path, producing many breaks without relying on reactive oxygen species. Oxygen mainly enhances damage from indirect effects (free radicals) that are more prominent with low-LET radiation like X-rays. Because densely ionizing radiation already causes direct, severe damage, increasing oxygenation doesn’t significantly change how sensitive a cell is to it. So the cell’s sensitivity remains about the same when oxygenation increases.

High-LET, or densely ionizing, radiation causes most damage directly along its path, producing many breaks without relying on reactive oxygen species. Oxygen mainly enhances damage from indirect effects (free radicals) that are more prominent with low-LET radiation like X-rays. Because densely ionizing radiation already causes direct, severe damage, increasing oxygenation doesn’t significantly change how sensitive a cell is to it. So the cell’s sensitivity remains about the same when oxygenation increases.

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