Lactose intolerance

High school (ages 12+)
Human Body

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/lactose-intolerance

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the diagnostic modalities?Key diagnostic tools include the hydrogen breath test and dietary elimination trials
2. What causes lactose intolerance?When the body makes too little lactase enzyme, lactose stays in the small intestine and is not digested.
3. Why do some people get gas and tummy pain after drinking milk?Undigested lactose is fermented by bacteria in the large intestine, producing gas and water that cause bloating and pain.

Lactase-Phlorizin Hydrolase (LPH): The specific enzyme responsible for hydrolyzing lactose into absorbable monosaccharides.
Lactase Persistence (LP): The genetic trait allowing for continued lactase production into adulthood, common in certain human populations.
Enterocytes: The absorptive cells lining the wall of the small intestine where lactase is produced.