Q: Which of the following equations correctly represents the calculation of blood alcohol content (BAC) as a percentage?

$$\text{BAC} = \frac{\text{amount of alcohol in blood}}{\text{total blood volume}} \times 100$$

Q: Which of the following is a correct multi-step pathway for ethanol metabolism in the liver?

$$\text{Ethanol} \xrightarrow{ADH} \text{Acetaldehyde} \xrightarrow{ALDH} \text{Acetate}$$

Question 1

Which organ is primarily responsible for metabolizing alcohol through the action of alcohol dehydrogenase (ADH)?

Accepted Answer

Liver

Question 2

During alcohol metabolism, which enzyme catalyzes the conversion of ethanol to acetaldehyde?

Accepted Answer

Alcohol dehydrogenase (ADH)

Question 3

Which of the following best describes the correct sequence of alcohol metabolism in the human body?

Accepted Answer

Ethanol $$\rightarrow$$ Acetaldehyde $$\rightarrow$$ Acetate

Question 4

A female and a male of similar weight consume the same amount of alcohol. Which factor is most likely to result in a higher blood alcohol content (BAC) for the female?

Accepted Answer

Females have less functional ADH enzyme compared to males.

Question 5

Which of the following equations correctly represents the calculation of blood alcohol content (BAC) as a percentage?

Accepted Answer

$$	ext{BAC} = \frac{	ext{amount of alcohol in blood}}{	ext{total blood volume}} 	imes 100$$

Question 6

Which metabolic product of alcohol can be used for energy by cells?

Accepted Answer

Acetate

Question 7

A person with a non-functional ALDH gene is likely to experience which of the following after consuming alcohol?

Accepted Answer

Accumulation of acetaldehyde leading to facial flushing

Question 8

Which of the following factors would most likely increase the rate of alcohol absorption?

Accepted Answer

Drinking alcohol on an empty stomach

Question 9

In the process of alcohol metabolism, which enzyme is responsible for converting acetaldehyde to acetate?

Accepted Answer

Aldehyde dehydrogenase (ALDH)

Question 10

Which population is most likely to experience 'Asian flush' after alcohol consumption due to genetic differences in alcohol metabolism?

Accepted Answer

Individuals of Asian descent

Question 11

A 5'2" female is drinking at the same rate as a 5'10" male soccer player. Which of the following is most likely true about her BAC compared to his?

Accepted Answer

Her BAC will be higher due to her smaller body size.

Question 12

Which of the following is NOT a factor that influences the rate of alcohol metabolism?

Accepted Answer

Blood type

Question 13

Which step in alcohol metabolism occurs in the small intestine?

Accepted Answer

Absorption of alcohol into the bloodstream

Question 14

If a person has a higher percentage of body fat, how will this affect their BAC after consuming alcohol?

Accepted Answer

Their BAC will be higher because alcohol is less diluted in body water.

Question 15

Which of the following statements about alcohol digestion is correct?

Accepted Answer

Alcohol is absorbed directly from the GI tract without digestion.

Question 16

A patient presents with symptoms of facial flushing and rapid heartbeat after consuming alcohol. Genetic testing reveals a deficiency in which enzyme?

Accepted Answer

Aldehyde dehydrogenase (ALDH)

Question 17

Which of the following is a correct multi-step pathway for ethanol metabolism in the liver?

Accepted Answer

$$	ext{Ethanol} \xrightarrow{ADH} 	ext{Acetaldehyde} \xrightarrow{ALDH} 	ext{Acetate}$$

Question 18

Which of the following is a real-life consequence of having a non-functional ALDH enzyme?

Accepted Answer

Increased accumulation of acetaldehyde and unpleasant symptoms after drinking

Question 19

Which of the following statements best explains why males tend to have a lower BAC than females after consuming the same amount of alcohol?

Accepted Answer

Males have a larger body size and more functional ADH enzyme.

Question 20

Which of the following is the primary reason some individuals experience facial flushing after alcohol consumption?

Accepted Answer

Accumulation of acetaldehyde due to ALDH deficiency

Alcohol Metabolism: Absorption, Metabolism, and Factors Affecting Blood Alcohol Content

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