Enzymes Help Us Digest Food
I. Maria's Problem
After Maria drinks a tall glass of milk, her abdomen feels uncomfortable
and she has diarrhea and flatulence. Maria has noticed three things about
her problem.
• She has the same symptoms after she drinks milk that has had the fat
removed.
• She does not have these symptoms if she drinks milk that has had the
sugar lactose removed.
• She also does not have these symptoms if she takes a pill that
contains the enzyme lactase when she drinks a glass of whole
milk.
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