BAT Alcohol Metabolism & Physiology 3

Question 1

The microsomal ethanol oxidizing system (MEOS) primarily involves which enzyme?

Accepted Answer

Cytochrome P450 2E1 (CYP2E1)

Answer

CYP2E1, located in the endoplasmic reticulum, is the key enzyme of the MEOS pathway and becomes increasingly important at high alcohol concentrations.

Question 2

Henry's Law, as applied to breath alcohol testing, states that at a given temperature:

Accepted Answer

The amount of alcohol dissolved in a liquid is proportional to the partial pressure of alcohol above it

Answer

Henry's Law establishes that vapor pressure of a volatile substance in equilibrium with a solution is proportional to its concentration in that solution.

Question 3

A 1°C increase in body temperature above 37°C is estimated to change the breath alcohol reading by approximately:

Accepted Answer

Increase by 6-7%

Answer

Each 1°C rise in body temperature increases alcohol vapor pressure and thus breath alcohol readings by approximately 6-7%, potentially overestimating true BAC.

Question 4

Which of the following conditions can cause endogenous production of mouth alcohol that may interfere with a breath test?

Accepted Answer

Gastroesophageal reflux disease (GERD) or belching

Answer

GERD or belching can bring stomach alcohol vapors into the mouth and upper airway, potentially elevating BrAC readings if testing is not delayed.

Question 5

The standard observation period before conducting an evidential breath test is intended to ensure:

Accepted Answer

No mouth alcohol from regurgitation, belching, or oral alcohol sources is present

Answer

The 15-20 minute deprivation/observation period ensures that any mouth alcohol dissipates so that only deep-lung alveolar air is sampled.

(BAT) Breath Alcohol Technician Certified Practice Test

(BAT) Breath Alcohol Technician Certified Practice Test

BAT Alcohol Metabolism & Physiology 3