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← ScienceWhich consequence results when strontium-90 undergoes beta decay in bone?
A)Erythropoiesis reduces because marrow damage.✓
B)Collagen production rate abruptly increases.
C)Hydroxyapatite crystals grow larger there.
D)Calcium absorption shows a rapid increase.
💡 Explanation
Beta decay emits electrons, causing ionization damage; because strontium-90 replaces calcium in bone, this concentrated decay damages marrow. Therefore, erythropoiesis reduces, rather than increasing collagen/hydroxyapatite formation because those processes don't directly involve marrow cells.
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