Two people of the same gender consume the same amount of alcohol in the same amount of time. Nevertheless, one of them sobers up substantially sooner than the other, MOST likely, this difference is due to differences in:

Two people of the same gender consume the same amount of alcohol in the same amount of time. Nevertheless, one of them sobers up substantially sooner than the other, MOST likely, this difference is due to differences in:

• A. Food intake, specifically food eaten immediately after drinking concluded
• B. Liver function; some people's livers metabolize alcohol faster than others' livers
• C. Breathing rate; people who breathe more often can exhale the carbon dioxide by product of alcohol metabolism faster
• D. Activity level while drinking increased activity increases the metabolism rate

Answer: (B)

The main idea is that how quickly someone sobers up is determined by how fast their body can metabolize alcohol, which mainly depends on liver function. The liver uses enzymes (primarily alcohol dehydrogenase and acetaldehyde dehydrogenase) to convert ethanol first to acetaldehyde and then to acetate, which is then used or excreted. People differ in how active these enzymes are and in overall liver health, so their rate of alcohol clearance varies. If one person’s liver metabolizes ethanol faster, their blood alcohol level falls more quickly, and they feel sober sooner, even with the same amount of alcohol and the same drinking duration. Food can delay absorption and peak levels, but once alcohol is already in the bloodstream, the pace of clearance is set by liver metabolism, not by what was eaten immediately after. Breathing rate or exhaling CO2 doesn’t meaningfully speed up alcohol elimination, and while physical activity may slightly influence metabolism, it’s not the main factor distinguishing such individuals.

The main idea is that how quickly someone sobers up is determined by how fast their body can metabolize alcohol, which mainly depends on liver function. The liver uses enzymes (primarily alcohol dehydrogenase and acetaldehyde dehydrogenase) to convert ethanol first to acetaldehyde and then to acetate, which is then used or excreted. People differ in how active these enzymes are and in overall liver health, so their rate of alcohol clearance varies. If one person’s liver metabolizes ethanol faster, their blood alcohol level falls more quickly, and they feel sober sooner, even with the same amount of alcohol and the same drinking duration.

Food can delay absorption and peak levels, but once alcohol is already in the bloodstream, the pace of clearance is set by liver metabolism, not by what was eaten immediately after. Breathing rate or exhaling CO2 doesn’t meaningfully speed up alcohol elimination, and while physical activity may slightly influence metabolism, it’s not the main factor distinguishing such individuals.