Lactase & Lactose Intolerance Quiz

Lactase is a(n) ________________ that helps us digest _________________ faster

• enzyme, lactose

• nucleic acid, lactose

• enzyme, lactic acid

• lipid, lactic acid

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NGSS.MS-LS1-7

What is the primary function of the lactase enzyme in the human body?

• To break down proteins into amino acids

• To convert glucose into energy

• To break down lactose into glucose and galactose

• To synthesize lactose from other sugars

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DOK Level 1: Recall

Which of the following is a symptom of lactose intolerance?

• Increased blood pressure

• Muscle growth

• Bloating and gas

• Faster metabolism

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DOK Level 1: Recall

Lactase persistence is the continued activity of the lactase enzyme beyond early childhood. Which population is most likely to exhibit lactase persistence?

• East Asian populations

• Northern European populations

• Sub-Saharan African populations

• South American populations

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DOK Level 2: Skill/Concept

What genetic change is most commonly associated with lactase persistence?

• A deletion in the lactase gene

• A mutation in a regulatory element near the lactase gene

• A duplication of the entire lactase gene

• A point mutation in the mitochondrial DNA

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DOK Level 2: Skill/Concept

At what pH does lactase typically function work best?

• At a pH of 1

• At a pH between 2-7

• At a pH of 10-14

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DOK Level 2: Skill/Concept

At what temperature condition does lactase work best?

• Ice

• Room temperature

• Hot water

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NGSS.HS-PS1-5

Discuss the evolutionary advantage of lactase persistence in populations that have traditionally practiced dairy farming.

• It allowed for better utilization of dairy as a nutrient-rich food source

• It increased resistance to infectious diseases

• It enhanced the ability to digest proteins from all food sources

• It reduced the population's reliance on water

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DOK Level 3: Strategic Thinking

Evaluate the impact of lactase persistence on cultural dietary practices in different regions of the world.

• It has led to a decrease in dairy consumption worldwide

• It has influenced the prevalence of dairy-rich diets in certain cultures

• It has resulted in uniform dietary patterns globally

• It has decreased the diversity of traditional cuisines

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DOK Level 3: Strategic Thinking

About how much of the world's population is lactose intolerant or CAN'T digest dairy?

• A minority of the world's population

• Half of the world's population

• A majority of the world's population

• All of the world's population