Final answer:
The statement that BAC is measured by the mg of alcohol in 1000 ml of blood is true. BAC is a measure of alcohol intoxication legally defined in certain ranges and varies among individuals. It can be measured through blood or breath tests and is subject to factors like metabolism rates.
Step-by-step explanation:
The statement that you measure BAC by the mg of alcohol found in 1000 ml of blood is true. BAC, or blood alcohol concentration, is typically expressed as a percentage of ethanol in the blood in units of mass of alcohol per volume of blood (for example, milligrams per deciliter). BAC can be measured by blood or breath testing, and is used to assess alcohol intoxication levels.
For instance, legally, alcohol intoxication might be defined as a BAC of greater than 5.4-17.4 mmol/L (25-80 mg/dL or 0.025-0.080%). The effects of alcohol vary widely between people, and factors such as age, sex, and health condition can influence a person's BAC after consuming the same amount of alcohol.
The rate at which alcohol is broken down in the body also differs between individuals, with average males breaking down alcohol faster than females. This metabolism rate is important because it determines how quickly a person's BAC decreases after they stop drinking.