Answer :
Blood Alcohol Concentration (BAC) is a measure of the amount of alcohol in a person's bloodstream. It is a standard way to express how much alcohol you're consuming in relation to your body and is important to determine legal limits and impairment.
For the question about how BAC is measured, the correct unit used in the standard measure of BAC is grams of alcohol per deciliter of blood. Here's a breakdown:
1. Ratio of blood to alcohol: This option doesn't accurately describe the concentration measurement as it implies a comparison rather than an actual quantitative measure.
2. Milliliters of alcohol per liter of blood: Although this is a measurement of volume, it's not the standard unit used for BAC measurement. BAC typically relates to the mass of alcohol rather than its volume.
3. Micrograms of alcohol per gram of blood: This unit, while technically a measure of concentration, is not the standard convention for reporting BAC.
4. Grams of alcohol per deciliter of blood: This is the standard measurement used for BAC. It specifically quantifies how many grams of alcohol are present in 100 milliliters (or one deciliter) of blood.
Therefore, the correct choice is grams of alcohol per deciliter of blood. This measurement helps in determining the degree of intoxication and is used in legal definitions around driving and operating machinery under the influence of alcohol.
For the question about how BAC is measured, the correct unit used in the standard measure of BAC is grams of alcohol per deciliter of blood. Here's a breakdown:
1. Ratio of blood to alcohol: This option doesn't accurately describe the concentration measurement as it implies a comparison rather than an actual quantitative measure.
2. Milliliters of alcohol per liter of blood: Although this is a measurement of volume, it's not the standard unit used for BAC measurement. BAC typically relates to the mass of alcohol rather than its volume.
3. Micrograms of alcohol per gram of blood: This unit, while technically a measure of concentration, is not the standard convention for reporting BAC.
4. Grams of alcohol per deciliter of blood: This is the standard measurement used for BAC. It specifically quantifies how many grams of alcohol are present in 100 milliliters (or one deciliter) of blood.
Therefore, the correct choice is grams of alcohol per deciliter of blood. This measurement helps in determining the degree of intoxication and is used in legal definitions around driving and operating machinery under the influence of alcohol.
