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← Human Body & HealthWhy does liver damage due to chronic alcohol consumption elevate blood ammonia levels?
A)Increased urea cycle enzyme activity
B)Enhanced ammonia conversion to glutamine
C)Downregulation of hepatic portal circulation
D)Impaired urea cycle enzyme function✓
💡 Explanation
Liver damage impairs the urea cycle, which converts toxic ammonia into urea for excretion; because the damaged liver cannot efficiently perform this conversion, ammonia accumulates in the bloodstream. Therefore, impaired urea cycle enzyme function leads to elevated blood ammonia, rather than increased enzyme activity or enhanced glutamine conversion.
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