Students will release the main nutrient and end-product in a slice of bread. This game is a fun way to review carbohydrate digestion. This Google Form resource contains 20 questions. There are five puzzles, and each includes four questions. Students must unlock five locks by answering the 20 questions. A four-letter code is generated as questions are answered, which will open the locks. Each puzzle contains response validation. Students can't move to the next puzzle until they enter the correct code. An answer key is included.