After participating in this module, students will be able to:

• Illustrate the path that a molecule would take to enter the circulation from the stomach/intestine and be transported throughout the body.
• Recognize that soluble compounds are dissolved in the blood.
• Explain the relationship between passive diffusion and the concentration of a molecule.
• Distinguish between active transport and passive diffusion.
• Identify the chemical and physical properties of an alcohol that determines its volatility.
• Discuss the term “dynamic equilibrium” as it applies to a biological system, using ethanol as an example.
• Recognize the oxidized and reduced forms of a molecule.
• Relate chemical reactions to real-life applications (e.g., use the Breathalyzer™ test as an example).
• Calculate the blood alcohol concentration (BAC) using a blood-to-breath ratio.

After participating in this module, it is expected that students may be able to:

• Extend this knowledge to predict the path of a drug to its target organ in the circulatory system depending on its route of administration.
• Compare and contrast the volatility of compounds other than ethanol.
• Evaluate the accuracy of the Breathalyzer™ test for intoxication using scientific principles and mathematical formulas.
• Explain the scientific principles of the Breathalyzer™ test or other commonly used breath tests for alcohol intoxication.