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← Human Body & HealthAn individual with chronic ethanol consumption exhibits significantly reduced gluconeogenesis. Which mechanism explains why this phenomenon occurs in the liver?
A)Increased insulin receptor sensitivity
B)Ethanol metabolism generates NADH✓
C)Elevated glucagon secretion directly
D)Enhanced liver glycogen synthesis
💡 Explanation
Ethanol metabolism in the liver increases the NADH/NAD+ ratio, which inhibits gluconeogenesis because this altered ratio reduces the availability of substrates needed for the process. Therefore, gluconeogenesis decreases, rather than increasing due to insulin sensitivity, glucagon, or glycogen synthesis.
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