Final answer:
The claim that BAC is measured as the amount of alcohol in milligrams per 100 millilitres of blood is true. BAC levels are used to assess intoxication, which can have legal consequences for activities such as driving.
Step-by-step explanation:
The statement that BAC is the amount of alcohol measured in milligrams, found in 100 millilitres of blood is true. Blood Alcohol Concentration (BAC) is a measurement used to determine the amount of alcohol in the bloodstream, typically after the consumption of alcoholic beverages. The immediate effect of alcohol consumption can vary depending on an individual's BAC, which in turn is influenced by factors such as age, sex, body weight, and overall health. It is important to understand that BAC can have legal implications, especially in the context of driving where a BAC of 0.08% is generally considered legally impaired. Additionally, alcohol is metabolized in the human body at a rate of about 3.3 mmol/L (15 mg/dL) per hour, and variations in metabolism can occur based on sex and individual characteristics.