Your first big biology exam is coming up in a few days, and in order to prepare for late-night study sessions, you buy a box of Yummies, a delicious type of snack cake. After checking out the nutrition facts label on the side of the box, you discover that a single Yummie cake contains 4.5 grams of total fat, 27 grams of carbohydrate, 0 grams of fiber, and 1 gram of protein.
-The pH of the stomach is extremely acidic (~ pH 2). If you ate a Yummie cake, what do you think would happen to the protein that you ingested as it passes through the stomach?
A) The protein would become denatured due to the acidic environment.
B) The protein would form longer proteins via dehydration reactions.
C) The protein would speed up digestion because it is an enzyme.
D) The protein would get broken down via dehydration reactions.

Question

Quizplus · Accepted Answer

The extremely acidic environment of the stomach would cause the protein in the Yummie cake to denature, meaning that its shape would change and it would be rendered nonfunctional.

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